Personally I'm a fan of Aegis: https://getaegis.app/ https://getaegis.app/ It's open source, doesn't try to lock you in. The app has a number of options for ba

Personally I'm a fan of Aegis: https://getaegis.app/ https://getaegis.app/ It's open source, doesn't try to lock you in. The app has a number of options for backup, but there's no cloud component. I've seen some love for Ente Auth as well, also open source. Ultimately it's a very simple app so there's a number of good open source options.