If you can "risk" the amount and think that your system is safe (like what you usually do), you can just import it to Electrum via "Import Bitcoin Address or private keys" in new wallet menu.
Then paste the WIF private key with the prefix p2wpkh: ; example: p2wpkh:L3BxN68HQp7zUv89ifFNDebU......
The choice is yours.
I am glad you managed to recover access to your coins and learned something along the way.
In future it is better to stay away from using obscure wallets like Lunu, and holding coins on centralized exchanges, or you won't be so lucky next time

Try to stick to proven and tested open source wallets/devices and decentralized exchanges like Bisq.
PS
I think some people can earn a nice amount of money helping other people recover lost coins
