Bip39 Tool. Though you will find BIP39 wordlists in languages aside from English, it really is strongly not advisable to utilize non-English words for wallet backups. It might make restoring the wallet tough or not possible. BIP39 specifies a list of 2048 words from which the mnemonic phrase is picked https://highkeysocial.com/story4515288/bip39-wallet-https-linktr-ee-bip39-bip39-words-fundamentals-explained