I don't know how to cum

This has been driving me crazy especially my partner he feels almost humiliated cause he can't make me cum. well I don't know how I now the feeling that build up to it but when I get close it's like I freak out or get scared is there a way I can solve this make me more comfortable?

Can you have an orgasm on your own ok?

Ok first of all, talk to your partner about it. Just let him know that you're having a little problem, but, importantly, that you want him to make you come. Once he knows this, he'll be happier, and you can both work together to fix the problem.

It's impossible to tell without more information from you, but maybe you've had some negative past sexual experiences? This could affect your level of comfort with coming with your partner now.

What you could try is masturbating yourself, while he is there with you. You may still become scared but it might help to try something different

It may sound a bit funny but you could also try masturbating with a blindfold on while he is beside you. The blindfold will help to you to lose yourself in the moment.