Freshly out of breakup, any tips on hanging out alone?

I was with a long term 2 1/2 year long relationship with my high school sweetheart. We broken up lately and I figured out my diagnosis. I’m struggling on being alone and picking up back the pieces together. I currently still live with my abuser. I’m moving out next year but any advice on breakups or struggling with isolating would be a great help. I have a lot of friends but they’re always busy, I’m going to community college full time too. (There is no hope with the cc everyone is not there to make friends) I have a lot of loving friends but I realized I need to enjoy my own solitude, I do have hobbies like art but I need to go out more..

Any tips on being alone, enjoying your own solitude? Like solo-dates and stuff like that. Breakup tips with shame and feeling like your support system crumbled?