Bip39 Tool. While there are actually BIP39 wordlists in languages besides English, it can be strongly not proposed to work with non-English words for wallet backups. It would make restoring the wallet tough or unattainable. Entropy is a complicated characteristic. Your mnemonic could be insecure if this characteristic is used https://thebookmarklist.com/story19452312/bip39-mnemonic-https-linktr-ee-bip39-the-fact-about-bip39-words-that-no-one-is-suggesting