I can only orgasm on top? TMI

I hear about all these women finishing in all types of positions never really making a difference. I can only do it if I’m on top. This has been with all my partners with an exception of maybe 3 times. I don’t get why it’s so hard when I’m not the one in control. It doesn’t feel bad other positions just doesn’t do the trick? Is this uncommon? Sex gets kind of repetitive because of this. Is it all about ranging person to person or is there some trick I’m not aware of lol