I'm done begging

Idk what's going on with my husband, we used to have a lot of Sex like 6 times a week, but he has Changed so much, the only way we get to have Sex is If I beg him cause he NEVER initiates anything! He never wants to touch me but he seems to love me and enjoys spending time with me, but when it comes to sex, he's always tired or not in the mood..
I don't understand, it's okay if he doesn't wants to have much sex like we used to, but why does he avoids sex all the time 😞