Framework choice


I want to make a dashboard that takes data from different APIs, and makes some calculations with them and then displays the data in charts. I also want to have a authentication possibility and a payment processor. My question is, what would you recommend to learn to be able to do that?
I am thinking Angular or React, plus Auth0 and Paypal for authentication and payments.
Do I need a Django based back-end in this case?

Also, which of the Angular or React is easier to pick up if I am new to Javascript? Thank you very much!