How do I become okay with being alone?

I’m 20 years old and I’ve basically had a boyfriend since I was 16.

First boyfriend was 16-18, and got into another relationship pretty soon after. Then I got pregnant.

Our daughter is a year and a half old now. He broke up with me. As of right now I’m staying in the guest room until I can miraculously get on my feet but that’s another story.

The point is that every night I lay in bed alone and think about how we used to just hang out and watch movies or cuddle or talk after our daughter went to bed. Now i spend that time either doing work or watching Netflix to numb my mind until I’m too exhausted to stay awake any longer. Then I wake up multiple times a night in a panic because he’s not next to me. Then I remember he’s not next to me because he doesn’t love me anymore. Then I feel empty inside.

It’s been a month. I know it’ll get easier once I move out yet at the same time I’m terrified because then I’ll be living alone and on the days my daughter is with him, i really will be all by myself

I’ve never liked being alone and not even just regarding being in a relationship. I just hate being alone. I get anxiety and I get sad and I just like to be around people especially at night but that’s not possible (and finding a roommate would be nice but wouldn’t solve my issue) idk what to do. I feel like I’ll never be happy.