Masterbation...

So I’m a half Virgin and I am not sure how to masterbate. I say that because I’ve been trying to make myself cum and idk I just can’t. Or I stop suddenly. Porn doesn’t work and I’m not sure if I’m broken but it’s weird. Anyone else had that issue ? I say half virgin because I was about to lose my virginity and he put it in but after two strokes I was like take it out. He ate me out before but idk I wasn’t really feeling it. Idk I been kinda beating myself up because I don’t understand what to do but maybe I’m pressuring myself and I don’t even realize. Idk if he noticed but I was embarrassed. He’s been super sweet but still embarrassing you know ?