Tips for riding?

I can ride but it's usually difficult to for a long time and doesn't always feel so good. It's like I'm working so hard on riding right that it takes the sensation away. I guess you could say it doesn't hit the "spot". I've tried different positions while on top and different movements but it doesn't feel as good as everyone makes it out to be. I don't know if I makes a difference--he is uncercumsized & a good size for me. I know practice make perfect but wish I didn't feel like such a horrible rider😓