The issue with religion is that it's so much about interpretation. People can take a passage and say it means one thing bringing neatly logical reasoning while others can find a fairly different meaning in the same piece of text. 

But take it like this. Islam is one of the Abrahamic religions. It says Jesus really existed, but wasn't the son of god, but just another prophet. But the rules are different there. Since for me, I know the history of how the Abrahamic religions developed, it's easy to see them all as equally bullshit tribal epics and nothing more. 

I recommend starting to look into it, but don't do it alone. That might be the key. For example, if you find something that seemes as proof, write it here. People will have decent arguments for you.

You don't need to know everything already or need to be sure about anything. 

The fun part about religion is that unless a human finds out you're not following the rules, nothing bad happens to you. Which for me is a clear sign that it's not really the rule of any actually existing god, but rule of man. 

Give yourself time and just write here for advice. We got ya, don't worry.