Bitcoin wallet file is damaged due to storage format problem

[Lisibaw]

The wallet file of my bitcoin wallet is stored in the form of text.
In 2013, I copied and pasted the secretkey in the wallet file into a newly-built word document, and then deleted the secretkey in the original wallet file.
 A few years later, when I copied and pasted the secretkey into wallet.txt again, the wallet file was unusable and destroyed. My wallet file contains the following information:
partner:xxxxxxx
secretkey:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Excuse me, masters, how can I retrieve Bitcoin by program or other means?

[1714530027]

1714530027

[1714530027]

1714530027

[1714530027]

1714530027

[BitMaxz]

Would you mind to check if the secretkey is a WIF key that starts with K or L or use the link below to check if the secret key you are using looks the same as the private key listed there?

- https://en.bitcoin.it/wiki/List_of_address_prefixes

Once you confirm the secret key is a WIF private key you can import it to the Electrum wallet you can download the Electrum wallet from this link below

- https://electrum.org/#download

You can follow the guide below on how to import the private key It is old but the procedure should still be the same

- https://bitcoinelectrum.com/importing-your-private-keys-into-electrum/

[Lisibaw]

My bitcoin wallet is bitcoin core.