Can’t have a orgasm with my partner??

So I can give myself one, but it’ll have to be on my belly basically giving that area pressure , or on a table corner . I tried to do it on my back and I could never do it , it’s like more pressure against my legs does it for me . But since I cant do it while I’m on my back , I can never do it with my partner . I don’t think I’ve ever had one from any partner I’ve been with . What do I do ?