Bip39. Although there are BIP39 wordlists in languages apart from English, it truly is strongly not encouraged to work with non-English words for wallet backups. It'd make restoring the wallet complicated or difficult. What constitutes a "very good wallet" is one that has very clear, easy to entry documentation on https://alphabookmarking.com/story18650112/bip39-mnemonic-https-linktr-ee-bip39-the-bip39-wallet-diaries