Creating a bank with python

A simple object-oriented programming project I embarked on given I had some issues understanding it at first.
Here's the code.
I created a bank class and the subunits inside it such as operations that can be performed such as credit, debit and loan.

You can check out the code in my GitHub link
https://github.com/Just-Mike4/Python-bank/blob/e4f528f3cf1a3083d414729f9b52f609cfdf1932/OOPBank(main).py
Read, like, comment, share, and any piece of advice on where to learn more and what to add will be appreciated.