What does he mean by "i do all the work"

So he usually says that, like after we finish and idk what he means rly. I guess he does all the work. I'm really insecure ESPECIALLY during sex so i thats why i like the lights off. But usually during sex after i finish on top i'm on my back... so like? how am i supposed to do anything on my back 😂 How do i "put in more work" during sex?