Bip39 Mnemonic. You should then do a primary recovery with a command such as just one beneath. (This command utilizes a sample wallet file bunlded with BTCRecover) Mnemonics are representation of entropy. Starting point requires producing a choice as to the amount entropy you think about Risk-free to your functions. https://madbookmarks.com/story18758229/bip39-wallets-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work