Install bip39 https://www.anime-planet.com/users/zoriuswxxq It's vital which the mnemonic sentences are generated from randomly chosen quantities! These numbers might be produced in many different various ways, which happen to be explained in other articles or blog posts here, like "What on earth is an RNG" and Seed Phrase Generation. BIP39 solves https://writeablog.net/ipennywpzc/the-ultimate-overview-to-offline-bip39-generators-remain-secure