No. Your raw transaction doesn't include your private key. Instead, it includes a digital signature which can be used only for that transaction and becomes invalid if transaction data is changed.
By the way, why doesn't your friend let you broadcast the transaction yourself?

I knew you know that.
I made that post for OP or anyone else who want to do such a calculation.


You are right. For a newbie, it may be difficult to know what are fee rate and transaction size.

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The screesnshot posted by Peanutswar has been taken from mempool.space.
It's a block explorer and can be used for tracking transactions.

You didn't tell us whether you have control over any of receiving addresses or not.
If so, as suggested by NeuroticFish, you can use CPFP method.

As stated by mocacinno, if you have control over any of receiving addresses, you can use CPFP method.
This means that you should spent the fund received in the unconfirmed transaction with a high fee, so a miner include both transactions (the unconfirmed one and the one you make to do CPFP) in a single block.

In both transactions, 1F8eovMT....... is the change address.
If you own this address, note that it includes 36 UTXOs. So, you should pay attention that not every transaction made from this address with a high fee will help you.
If you want to do CPFP, you should spend the UTXO that has been received in the unconfirmed transaction. To do so, you need a wallet with coin control feature.

It's not difficult to do the calculation.

S_A = Size of the unconfirmed transaction
S_B = Size of the new transaction (the transaction you will make for doing CPFP)

f_A = The fee rate used for the unconfirmed transaction.
f_B = The fee rate you should use for the new transaction.
f = the fee rate required for a fast confirmation.

f_B = (f*(S_A+S_B) - S_A*f_A) / S_B

Due to privacy reasons, bitcoin core allows you to have multiple addresses.
If you see 4 funded addresses when using listaddressgroupings command, it means that you have sent bitcoin to 4 different addresses.  


Bitcoin core doesn't make any transaction automatically.
My guess is that you copied the address from bitcoin core every time you wanted to send bitcoin and didn't notice that it's a new address.


No. You need a new private key for each of new addresses.
Note that the wallet.dat file contains all your private keys. If you have stored that file somewhere securely, you don't need to keep individual private keys.


If you want to have a seed phrase, you shouldn't use bitcoin core.


Edit:
As stated by NotATether below, there's also the possibility that the new generated address are your change addresses.
Since you didn't say anything about making any transaction using bitcoin core, I'm assumed that you have never made any transaction with your wallet.

You don't have to use MetaMask on your browser. Its application can be installed on both Android and IOS devices.
Of course, it's still a hot wallet and as you suggested, it's better if Morpheus Eberhardt uses a hardware wallet.

When there are many withdrawal requests, they can even charge lower fees. They usually process multiple withdrawals in a single transaction.
Note that the fee you pay for a single transaction with 1 input and 100 outputs is lower than the fee you pay for 100 transactions with 1 input and 1 output.

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That's not Electrium. That's Electrum and the official website is electrum.org.
If someone reads your posts and then searches for that wrong name on google, there's a big possibility that he/she downloads a fake version of electrum.  

Binance has decreased bitcoin withdrawal fee to 0.0002 BTC which is around 7.8 dollars at the current rates.
Of course, it's still very high and they are charging extra fee.


The image has been taken from binance withdrawal page.

Currently, even transaction with 1 sat/vbyte are confirmed very fast and you shouldn't have to pay a high network fee.
Are you sending bitcoin from your own wallet or a custodial service like an exchange? Custodial services usually charge a high withdrawal fee.

I just visited the exchange you mentioned to see how those tokens work. It seems that no one is interested in those tokens and there is no liquidity.
The 24 hours trading volume for both BTCUP and BTCDOWN is zero.

We don't need that.
If you write an address manually and make a mistake, it's almost impossible that it's a valid address and your wallet or the service you are using won't allow you to make transaction.

You are saying that there was no address when the transaction mentioned by LoyceV was made? Am I getting you correctly?
If so, electrum shouldn't show any transactions made before that transaction? Right?
But if you import 19uf6F6EDijkH4ZUaqsi3pZ2SVD6A5RG8X into electrum, you will see some transactions made on February 6, 2010 (11 days before the transaction mentioned by LoyceV)

What am I missing here?
Maybe, in that time, people could create both P2PK and p2pkh outputs. Right?

I think the replies made in the topic created by BlackHatCoiner last year should be helpful. He asked the same question.
Electrum doesn't show rewarded coins

Right.
You can use your watch-only wallet for generating new addresses and checking your balance and transactions.
You can't sign transactions using your watch-only wallet and you will need your wallet on VM whenever you want to make a transaction.

Are you sure about this?
In the OP, you said that you have created a wallet with 2FA. As mentioned by Charles-Tim, your wallet can't be both standard and 2FA.

If your wallet is 2FA, you have three master public keys.
If your wallet is standard, you have one master public key.


That guide works.
A 2FA wallet in electrum is actually a 2 of 3 multi-signature wallet.

In the 2FA wallet, you can go to "Wallet information" and get all three master public keys.
If you create a multi-signature wallet with those three master public keys, you will have a multi-signature watch-only wallet with the same addresses as the 2FA wallet.

If you want to sell your physical bitcoin here on Collectibles board or any other place, you should very careful to not get scammed.


You can upload your image on an image hosting website like imgur and post the link here.

Read the following article on Bitcoin Wiki.
Casascius physical bitcoins


This should work. But I don't recommend it.

OP should have a big amount of bitcoin and It's not recommended to import the private key into a hot wallet. OP should import the private key into an air-gapped device and make offline transaction.

What do you exactly want to do?
Do you want to sell the physical coin itself?
Do you want to redeem the private key and sell your bitcoin on an exchange?
Do you want to make sure that the physical coin you have is genuine and you don't want to sell your bitcoin?

You should destroy the hologram and import the private key into a wallet and access your bitcoin.

Note that, before importing your private key into a wallet, you should make sure that the device is secure and there is no malware in it.
I recommend you to use electrum.

Warning:
Download electrum only from its official website and do not forget to verify your download.


For more security, you can create a watch-only wallet on a online device, create an unsigned transaction and sign the transaction on an air-gapped device.  
For more information on how to make a transaction offline, visit the following link.
How to spend from an offline paper wallet using Electrum

If you only want to check your balance and you don't want to make any transaction, you only need to enter your address (not your private key) in a block explorer like blockchair.
(Never enter your private key in a block explorer.)

As the address in question has received its first transaction about 6 years ago, you definitely created your wallet using a very old version of electrum.

In electrum versions older than 3.3.4, servers were able to show any message. Some servers abused this feature and showed a message asking users to download a fake version of electrum.
Didn't you update electrum using a link shared by servers?