If you want some half-convincing arguments for God’s existence that you can analyze and think over yourself, read up on some Aquinas and Paley. They’re still flawed, and have opponents that effectively question them, but they’re more successful than Pascal. You could also try out some Kant, but thats a bit more difficult to get the hang of.

For anti-God purposes, Hume’s your man. He pretty much invented religious scepticism.