Banking has luckily not affected me after degoogling, however Revolut (which I’ve used maybe once a year) is a notable exception where I can’t get it to work
Taxi - Bolt works, just make sure you have microG correctly set up
Phone - avoid Exynos/Mediatek devices as those are less likely to work correctly once degoogled or you change it’s ROM. I used to have an Xperia 5 III with LineageOS on it, everything worked on it including VoLTE and Sony’s stock camera apps.
*In games running on Unreal Engine 5