Bip39 generator offline https://penzu.com/p/2ea6922b70254307 The purchase on the mnemonic phrase matters. In the event you mess up the buy then You can't Get well your wallet. All your funds will probably be shed forever. Ensure you have a suitable backup. The amount security does a passphrase increase? A BIP39 passphrase https://bookmarkzap.com/story20064890/bip39-dot-map-not-known-details-about-bip39-word-list-txt-https-linktr-ee-bip39