Is it normal to not have sex EVERY DAY?

My husband and I use to have sex daily. Then a couple times a week & now maybe Once. He says we always want it at opposite times or one of us is busy and the other isn’t.. I can’t help but think he’s either just masurbating & doesn’t think I’m attractive anymore or something else. He’s always home, he works, comes home & plays his game. We’re really

Home body. It’s just weird to me... if I bring it up too much he will act as if ima sex fiend lol. He does smoke a lot of weed.. I don’t know if he’s being lazy or what.. any advice? I feel ugly 😞

(When we do have sex, it’s amazing) I just don’t get it. We have been married for 4 years)