How to improve sex life?

We’ve been together 2 years. He’s the only guy I’ve been with, though he’s been with other girls. I kind of wish I slept with more people before, but I’d wanted it to be with someone special and it never had felt right before. anyway, I have a higher drive than him. In the beginning of our relationship we had sex every day, sometimes multiple times, but then it averaged out to 3-5 times a week depending on what was going on. I’ve never orgasmed and I kind of wish we could improve our sex. usually i like our sex, but sometimes I’m just getting going when he finishes. I’m ok with short sex if we had sex more often (like multiple times a day) but we don’t typically. I try surprising him with lingerie sometimes and it’s usually pretty good then, but it’s not an every day solution. Is this normal? What are some tips to help improve it?