Also a fan. Check out Qubes OS on the desktop in case you haven’t already.

You can use the Google-free Android forks.

You don’t pick hardware to support you OS? Weird.

Work texts go to the work phone. Work 2FA also on work phone. I use a hardware TAN generator for web banking.

You need military type pants. I have no issues with phone sizes, I can fit four bottles of beer in my pants leaving the hands free to carry something when going down the stairs.