Sex problems 😒

So my SO and I have been together for nine years, and well for like the last 2 years sex has not been the same. He makes me feel like it's a chore and it doesn't seem like he's that into it anymore. I've tried to spice things up, and he doesn't want to try anything new he refuses to and I feel like he's bored.... We hardly have sex and when we do I feel like I have to beg him to, which isn't much of a turn on... Anyone else have this problem or advice to try and resolve this.?