"I had no idea about pagans and Satanists because most of society has no idea about pagans and Satanists."
There are these things called books. There's this wonderful tool called the Internet.
Try learning.
"You are an agnostic because you aren't sure about God."
That's the usual definition of agnostic. I call myself agnostic, because I believe in God but I am not sure, I have no knowledge (a gnosis), of God's nature.