An orgasm doesn't just fall from the sky. If and how you experience it depends on many things, ranging from your emotional state to what you do with your body.
Reaching an orgasm takes practice. It's best to take an approach of "the road is the goal". And, we highly recommend that you move your body more than you're used to.
Dania Schiftan's book is full of practice tips if you want to learn how to reach orgasm during sex alone and with a partner. Her step-by-step program also helps you enjoy sex more.