i havent been able to date since my last relationship. im so lonely

my last relationship was awful. long story short, i was in short-term, but severely emotionally abusive relationship over a year ago that has left a huge dent in my self-esteem and overall mental wellbeing. i used to be very extroverted and trusting, but since this relationship, ive been recluse. i have been extremely socially anxious, depressed, untrusting and unable to date since. ive been watching my friends get into loving, stable relationships and cant help but want the same thing for myself. i dont know how to put myself out there or regain the confidence in myself that i once had. i dont know what to do