Ente Auth. Obviously not Bitwarden, I don't even know why that's an option. Having your 1st and 2nd factors in the same place seems foolish. I used to use Aegis, which might technically be a bit more secure, but Ente is also on the PrivacyGuides recommendations list (https://www.privacyguides.org/en/multi-factor-authentication...), so I opted to use it for more peace of mind in case my phone breaks.