Communication and sex

Does anyone else have trouble communicating with a partner when they’re having sex? I have had multiple sexual encounters and I have never orgasmed from having sex, whether it’s vaginal, oral etc. I just don’t know how to word what I want or what I like especially if I’m not sure of what I want. I just want to please the person that I’m with and eventually I give up but I’m never satisfied. Does anyone have any tips? Is this normal?