Masturbating

I’ve never had an orgasm and I want to so bad. I can’t finish from sex, fingering (me or by SO), head or anything. Nothing. I’ve been masturbating for years and it’s felt really good and then it just stops. There’s no build up like everyone describes and the feeling I get isn’t that amazing. Someone please help I want to orgasm so bad. I was close one time with my ex then someone almost walked in so I had to hop off. Please help a girl out😂