is it possible for migrations that previously used wallets on the website and private keys to be used in different Bitcoin wallet applications ?
I had tried but always failed, maybe I was in the wrong stage or I couldn't.
can you explain about this ?
Yes, as long as you're not concerned with your privacy for using the same wallet address for every transaction. You can import the private keys to another wallet, just to make sure that the private keys are correct when you import it.
Can you tell us if what wallet software do you want to import your private keys, and what's the starting characters of your private key (5, K, L, xpriv, etc)? Note
don't paste here your private keys, it should be private..