For me, the best way to get over someone is to stay super busy. I thought my last breakup was going to be really hard on me but I had/have so much going on in my life that I didn’t even have time to think about it. In my past, I wasn’t really doing anything so I had all this time to sit around and obsess about what went wrong. Sometimes you just have to let go of the minor details and realize that it wasn’t meant to be. You’ll be happier in the long run.
Use all of your free time to create and seek out opportunities for you to better yourself. Learn about yourself, too. I know that sounds cliche as fuck but when you’re in a relationship with someone, you tend to lose your true self along the way while you’re overcompensating to make the other person happy. Hope you feel better soon!