Ad network for movie streaming application

Hi all
What is the best ad network for movies streaming android app Safe and earn more? Google is enough and ok Or should i use bitcoin payind network? Is it ok to put payment gateway on it To give premium user
What ad network i can use What u suggest.. Only for android app with 1 m users Thank you

You should not give premium membership. It's risky. Continue with google ads. I have seen other apps doing well with it.