AppLovin Earnings

I don’t really understand AppLovin Max. I have been using applovin max for some times now. But I think their earnings are very bad. How can I have more than 400K impressions but only 3$ it is getting frustrating. Please is there any better ads platform, or any solution to this applovin max earnings., adcolony, admob, Facebook audience network is one of the good adnetwork. But admob & fb audience is more better than others.

Admob is best if your app have more Google services like in-app purchases Admob