DeletedDeletedDeletedDeletedDeletedDeletedDeletedDeletedDeletedDeletedDeletedDeletedDeletedDeleted
Is there a reason you haven’t put it up on google play yet?
As to ad networks, most time the major players do better than some of the focused networks. Some of the smaller networks can promise high eCPM but have very low fill.
Best thing would be to try out the different ad networks out there, and not one… Set up multiple networks to ensure fill.
Good luck.