Lastly, you can give me some advice on when to transfer all my funds to a new standard wallet. Where can I see that the fees have down?
Now is a very bad time. The mempool is backed up and fees are high, and your fees will be even higher since you are spending from a disabled 2FA wallet since it uses multi-sig. I would sit tight for the time being and keep an eye on the mempool for when it starts to empty out significantly, which will likely take a couple of weeks.
Alternatively, if you
have to make a transaction now (as a payment to someone else, for example), then you could redirect any change from that transaction to an address in your new non-2FA wallet. Doing so would not incur any additional fee than if the change had just been returned to the old 2FA wallet. To do this in Electrum, you would need to click on Tools -> Pay to many, and then in the "Pay to" box you would enter your payment address followed by a comma and the amount to pay, and then in a new line you would enter an address from your new wallet followed by a comma and an exclamation point. The exclamation point in this case means "send all remaining funds". So your transaction might look like this:
1AddressYouArePaying, 0.01
bc1qAddressFromYourNewWallet, !