I’m having a hard time with my social life

I used to have a great social life. Always throwing my birthdays with a bunch of friends, lots of groups of friends and a couple years ago i entered into a mentally-abusive relationship. Which luckily i got out a year and a half ago and been better ever since but that relationship wreck me. He was a manipulative man and was constantly bringing me down. I lost a lot of friends due to isolation. I wasn’t feeling good about myself and that really belitte me. As for my present, I barely have any friends and am really battling with a little bit ofr depression. Has anyone been in this situation? Any advice?