Hmm have you ever been paid before.
I present to you today

Google AdMob: Google AdMob is a platform that is really good for app developer and app owners it enable an app developer to earn cash by just placeing ads to the app. Google pays every 21st of the month. You might also need to publish your app to earn massively from Google AdMob

Startapp: Startapp is also an advertisement company like Google AdMob that pays Developers and owners to display their ads on the app.
Startapp pays in USD and it's really cool to earn from them

Unity: One of the advertising company that also pays Developers to earn cool cash by just placing their ads there.

Combination of All : Did you know that you can also earn from the combination of all these advertising network ?
What you have to do is just to own an app and you can earn massively I really mean massively even if you're not a developer from Admob.
You can pay a developer some token to get you an app and then BOOM you start making online money.
It's so easy and simple.
Where to find Developers
You can get Developers from Fiverr, Upwork and other platform.
You can also contact a Developers via
collinscobaba@gmail.com collinscobaba@gmail.com