Bip39 Checksum. You would probably then do a basic Restoration that has a command like the one below. (This command makes use of a sample wallet file bunlded with BTCRecover) What constitutes a "very good wallet" is one which has crystal clear, very easy to accessibility documentation on supported BIP https://bouchesocial.com/story20717576/bip-39-https-linktr-ee-bip39-the-single-best-strategy-to-use-for-bip39-wallets