Bip39 Seed Phrase. Entropy values need to be sourced from a strong supply of randomness. This implies flipping a good coin, rolling a good dice, sound measurements etcetera. Don't use phrases from guides, lyrics from songs, your birthday or steet handle, keyboard mashing, or something you think that is random, https://forum-directory.com/listings13149080/bip39-vs-slip39-https-linktr-ee-bip39-a-simple-key-for-bip39-github-unveiled