If you don't mind me asking, what Bank? I've resolved that this phone will be my last googled phone, and my next will be GrapheneOS.
Not OP, but I've been on GrapheneOS for a few years and I have no problem with Chase, CiT or Wealthfront. I mostly use them to check balances and unlock debit cards, but they all login and function fine.
Halifax UK. It just refuses to work so I left it (Graphene is more secure, so forcing less security for the sake of tracking is off the cards). All the other banks so far say they won't work without Google services but if I click OK they work