Anorgasmia is the inability to achieve orgasm.
This is completely normal if you don’t have much experience with sex. You have to discover what excites you sexually before you’ll have an orgasm. Some children discover this by chance, during robe-climbing or drying themselves after taking a shower. Others have to discover this by experimenting.
Guys who masturbate normally discover pretty quickly what’s needed to come. That’s why few guys complain of anorgasmia.
Anorgasmia is mainly a female ‘problem.’ Many girls get excited, but don’t know how they can get passed the top of the hill.

What can you do about it?
Situational anorgasmia