Orgasm, enjoying sex?

I want to enjoy sex, lately it’s been feeling more and more like a task or to-do type thing, I’m not enjoying it. I also don’t think I’ve ever orgasmed, maybe once, I’ve been with my husband for 5 years and we’ve been sexually active for 3, nobody else before him. How do I figure out how to orgasm and enjoy sex? I’ve tried masturbation, and he fingers and goes down on me, it’s just not working lately.