Reading from Firebase

I am trying to implement a Firebase database within my app and need to read data from the database which will then be displayed as labels. However I am having problems with reading data from the database. I would appreciate any helpful code or links to tutorials, however I have watched a few that don’t seem to be working.

This may help if you are using Firebase Database

This tutorial series is for FireStore (another kind of Firebase product) https://youtu.be/P1cNScXGlVI