I'm so confused!!!!?!?!?

I was raised as a Catholic, but now I would like to be a Non Denominational Christian. The reason I would like to change religions is that upon research of the Catholic Church, I found that some of the teachings are... well... false. Can you tell me some of the Catholic teachings that go against God? And is there any evidence (like in the BIble) that proves Catholicism was founded by Jesus?