Does not change that you have or had some kind of belief as to how to become a Christian. Not answering that question is an answer. Yes, there are more sects of Christianity than any other belief system.
My argument is genuine Christians actually know God.
And that there is gospel of Christ by which one becomes such a Christian.
That God exists is in my personal view nonsense. Existence needs no proof, where anyone presents proof that God exists. to quote atheist Ayn Rand, "existence exists."
Now God has an identity. God is the reality which has no beginning and no end. Omnipresent, therefore, everywhere and so invisible. God is the uncaused existence in which all other existing things exist. So to deny God one must deny God is God.