I uninstalled banking related apps from my phone years ago. I used it so infrequently that every time I did use it, it was as if it had been newly installed and didn't remember anything about me. Now I use a desktop web browser for anything finance (and it's Firefox on Linux, so thankfully that works for now).
The phone will be used as MFA, and that will have requirements especially on Android versions. So it is going to be harder to escape it, it is darn comfortable using Android as a MFA. Many banks still use a custom device for MFA here but is is slowly going away.
BankID in Sweden and similar in other European countries.
It's getting repetitive to come with the same message over and over and over again, but in many countries you can no longer interact with your bank through the web browser. The banks' applications are either required for 2FA, or are the only way to use remote banking at all.
The last one applies in my country. You can of course go to the bank branch for every little financial operation, which is bad enough by itself for us living in cities, but is practically impossible for my relatives in the rural area, who would have to drive 100 km to the nearest bank branch, and then back just to move some money between two accounts.
Even if you don't care for anyone else but your country, it will come to you also, I promise.