If you install the app then you are complicit in normalizing the requirement of signing terms of service and data sharing agreements to US technology companies in order to do banking.

Feel free to say you are a member of the Church of Cryptography and that installing proprietary corporate controlled apps is against your religion.

Never been asked to install an app for banking, but a health care clinic dropped me as a patient for not buying a phone that can install their app. I was the first case where a patient refused to conform. Found a new clinic who was willing to earn my business with phone and email correspondence. The original clinic escalated the case to corporate HQ when I filed a public medical malpractice complaint, and they ultimately responded by adding a webapp.

DEMAND the right to live your life without corpotech in your pocket. I am now 5 years without a smartphone working as an engineer and founder with an active social life who frequently travels and it can absolutely be done.