When does sex start to feel really good?

So before I lost my virginity I knew that most women don’t have an orgasm their first time. So I wasn’t like expecting it to happen. But while it was happening everything felt alright not good but not bad. I felt like I do a better job when I masturbate. So when does sex start to feel really really good? Is it after you’ve had sex a couple times? Or is the person you sleep with?