Idk how to be friends with my crush....

So I really like this guy and want to ask him for his number but the closest I've ever gotten to a conversation is extremely short eye contact from across the room😅. But the thing is is that I don't wanna date right now so I just wanna be kinda friends with him to reserve a spot😁. I know he's friends with some of my friends but I still can't manage to even hang out with my other friends around him, let alone ask his number. Any advice on how to get on the kinda friends level and get his number??