This game has one major flaw
If you stuff ads in game you can’t put them during games and demand us to fit tight timer or achieve high accuracy. How the Hell we can be able to stop timer with acc of 85% if we loose focus few sec b4 point? And on timed games every add is sec or teo lost. And it’s not „we need to earn money”. Most games I know either put adds at the end of game (or b4 it) or put pause menu (or few secs of pause) after add to make us ready to continue. In your game? Not. I can’t give you anything higher than 1/5, no matter quality of game itself, as you’ve made it unfair to unplayability.
