If you're finding the game too challenging then maybe it's not the game for you. It was released as a more challenging game so it's not for everyone. There are millions of players in the top set of levels so I don't think it's rigged in any way.
That is the response one would expect, when it is rigged. No matter high your score is or how close you are to passing the level the only sure thing is you won't! Shady maneuvers!