Orgasm

So I'm 18, and I've had multiple sexual partners. I've never had sex, but I have given and received oral sex and been fingered. I don't really masturbate because I don't really feel the need to, however I've never had an orgasm, even with a male in the question!  I've only felt close once, but even then I still feel like the guy was fingering me for a long time. I don't know if I just can't orgasm, or the guy isn't doing it right/good enough. Help😂