Sex life is terrible

So this guy I’m seeing (been with him off and on for like 2 yrs now) has not been satisfying me lately when we want to have sex. At first when we first got together the sex was not the best but I had to teach him what I liked and what worked and after that the sex we had was everything and more. Slowly as time has pasted by the sex we have is becoming a little odd. For a while when we would actually have sex I wasn’t satisfied with the penetration so I stopped trying to have intercourse with him. Now when he’s in the mood he doesn’t even try to have intercourse he just wants me to give him a hand job and I’m like 🤔 wtf is going on. And it’s not like I ever told him through intercourse I’m not satisfied anymore I kept that to myself so I’m very confused on why he would go straight for a hand job rather than having that lead up to actual penetration??? Help me!