How to gently guide my agnostic friend toward faith?

Assalamu alaikum, I have a close friend who’s agnostic. Whenever we talk about belief, he says we’re just tiny creatures in the universe, too simple to know about God or creators. Then he adds there might be a creator, maybe not Allah, with different rules, and this uncertainty bothers him. I told him, if he thinks there’s a chance, why take the risk? If there’s a God, he’s in trouble; if not, he loses nothing. So believing seems like a win-win. I know faith must be sincere, but I thought acting like a believer could help him eventually accept it. He replied that belief isn’t in his hands. Any advice, brothers and sisters? JazakAllah khair.