I don't like judging people, but you sound like a nice, mature and well-put together adult; and your husband sounds like a 15-year-old man child. It's NOT your responsibility to care about his self-esteem and suggesting he does a hair transplant surgery. It's also NOT your responsibility to comfort him anymore. You're acting like a grown-up, and that guy doesn't even want to try a "parenting marriage", prioritize the children? And after all that, he's also super jealous about you dating someone??

Girl, you made the right choice. I hope it works out for you and the kids.