Bip39 Mnemonic. Entropy values need to be sourced from a solid source of randomness. This suggests flipping a good coin, rolling a good dice, noise measurements etcetera. Usually do not use phrases from guides, lyrics from songs, your birthday or steet handle, keyboard mashing, or everything you believe is random, https://phrasedirectory.com/listings13129464/bip39-seed-generator-https-linktr-ee-bip39-what-does-bip39-mnemonic-code-converter-tool-mean