Huawei runs it’s own branch of Android since it lost its ability to offer Google services.

In the case you’re not paying for “Android” but for the tech, whatever you think about it it’s a tech that no-one else is yet doing, least of all Apple which in real terms is still playing catch-up with Android and it’s insistance of a walled garden .

You could try https://2fas.com/ open source mobile application with browser extensions and cloud sync for backups.

Or www.bitwarden.com password manager is also open source and for a small “premium” supports 2FA for mobile/desktop/browser.