Bad at sex after seven years

Hi all, I usually don't post personal things on here, but I really need some advice. My husband and I have been married for seven years and we were both virgins. My husband talks about how much he enjoys sex and always initiates it. I, on the other hand, do not because frankly, my husband is terrible at it. I've talked to him about it, showed him ways to stimulate me, different positions, toys, counseling, etc. but he still has not made me orgasm once in seven years. I have to satisfy myself in secret, because if he knew I did, he would be devastated as he has very low opinion and confidence in himself. It's gotten to where I make excuses that my sex drive is low because I'm breastfeeding, or I'm tired from chasing the kids all day. I'm not sure what to do at this point because he really is a good guy and dad to our kids albeit socially awkward and sexually challenged. Leaving is not really a option at this point but I can't go the rest of my life sexually unsatisfied. It has made a small part of me resent him for it. I just want to be able to experience sex in a fun, satisfying way instead of feeling bored and disappointed. Thank you for listening. 😔