But we don't have anything like FF as an alternative to go from Android. Especially considering banks require "certified OS".
I also switched banks so I can use my bank card as the 2FA device, similar to CAP. [0]
[0]: https://en.wikipedia.org/wiki/Chip_Authentication_Program
Been doing this for a while. I have a smaller Samsung S22 for the apps I absolutely need that won't run on my Graphene phone. The majority of my day-to-day stuff is handled on my older phone running Graphene.
Been tinkering with Ubuntu Touch, but AFAIK they haven't figured out how to solve the issues with VoLTE yet here in the US but its on my radar to try and make the switch soon.