Use a dumbphone for calls and an Android phone with prepaid sim for stupid apps that modern life demands. They stay frozen most of the time (Insular). I also used to run degoogled LineageOs, but very often bank apps and anything involved with finance would bitch about it and refuse to function, so I had no other option but stock firmwares.
Those bank apps just need play service if I have to guess. Try installing microg. I am running grapheneos with their sand boxed play service in a separate profile, got some apps to work but not all so give it a shot.
Use a dumbphone for calls and an Android phone with prepaid sim for stupid apps that modern life demands. They stay frozen most of the time (Insular). I also used to run degoogled LineageOs, but very often bank apps and anything involved with finance would bitch about it and refuse to function, so I had no other option but stock firmwares.
I’ve had a lot of luck with banking apps on GrapheneOS. Worth a try if you haven’t already.
Those bank apps just need play service if I have to guess. Try installing microg. I am running grapheneos with their sand boxed play service in a separate profile, got some apps to work but not all so give it a shot.