I can’t cum during sex

Hi! I came here because y’all are better than google. So, every time I have sex with anyone, I don’t feel much pleasure and I can’t cum. When I masturbate, I usually watch porn and rub my clit in the exact same way each Time and I suppose I’m used to that? I’ve never been able to cum while not watching porn but I did the first time the other day on the phone with my boyfriend. But when we have sex I’m never close to cumming. It feels good at times but when it doesn’t feel good, I just feel pressure. I really want to be able to cum from having sex with him and I want to cum from him eating me out and fingering me but I have not yet been able to. Does anyone have any tips/tricks that may help? I would greatly appreciate it!