

Alas vaultwarden is a vault and a web interface only. Not a browser integration, not a desktop app, not an android / iOS client that can autofill passwords.
It’s very good, I’m using it myself with the official clients. I’m just afraid Bitwarden will start removing the possibility to use a self hosted vault or make it a feature you have to pay for.
You could start by creating an issue to add translations for the language you want and then expressing your interest in doing it yourself but needing guidance. Maintainers would be more than happy to help you.