Fire your bank if they don't respect your boundaries.
If there are any banking apps that run on LineageOS, kudos to them - if they are available in Germany, tell me so I can switch...
The banks were many years ago allowed to develop an electronic identification system and they now totally dominate in this space, and that's what the public sector generally supports.
It's the 'worse than Soviet' kind of nasty that tend to emerge from liberalist oligarchies.
It's a decent place to run a company though.
I'm probably too old to get conscripted even if I were to botch my predictions, I'm old enough to have done both obligatory service and a couple of military employments and been placed in and culled from the 'war placement' registry.