How to start dating again?

Ok so i just recently broke up with my hs boyfriend of 2.5 years because he was toxic as HELL.I mean he would pressure me into doing things I didn’t want to do and threatened suicide if I left him. Spoiler alert i did and I’m so much happier now. I just started college this year and it’s been a couple months, I’m over him and I want to start dating again buttt i feel like an ugly chud. I’ll be honest after the break up I gained a little weight and put on the freshman 15 (the 15 pounds all freshman put on when starting college) . I feel not great right now in terms of being attractive, but imma start going to the gym and imma try to turn it all around and start taking care of myself again. How do I start dating again? He was my first boyfriend so I’m not sure how I’m gonna put myself out there again. I don’t have game lol.