How do I finger myself ?

I’m 17 now, and I began masturbating (via rubbing my clit) when I was barely 12, and have no trouble orgasming. As much fun as it is though, I’d really like to try something new. But every time I try to stick my fingers up there, it doesn’t feel like anything. I try to push in and out and whatnot, but it just feels weird and I get my fingers all slimey for no reason. I’ve also only inserted one or two because I’m a virgin and the biggest thing I’ve stuck up there besides my fingers is a super tampon. So uh...do you guys have any suggestions? How do I make it feel as good as people say it is?

Thank you!! :)