How do I create an app and get profit through the app?
You can Earn money from apps or games.
There is lots of ads network you will integrate with games and apps E.
This is list of best ads you will earn heavy money through this networks
How to make apps or game?
Well the answer of this question is you can hire freelancer from fiverr and upwork .
The freelancer will integrate ads with your app or game .
and you will earn money through apps or games url(