Need some advice on my fucked dating life

Okay so, I (21M) was in a very serious relationship, then things started getting ugly, she started hating me out of nowhere (i could sense the hate when we were together, it was like she didn’t like me anymore). She was always disappointed with everything I did for her and was always trying to find problems in our relationship and blame it on me. Then on a random day she was coming back from college and I was at my home and she asked me if I could meet her in a public coffee shop, I already know what was gonna go down, spoiler alert guys: she broke up with me and acted like I was very problematic and wasn’t willing to solve anything but honestly the problems she was talking about were very solvable and I was willing to do anything for her, I genuinely thought I was gonna marry her, but everything ended.

A few months pass by, I hear from a friend that my ex (that girl) was dating someone from her class while she was dating me. I was like okay that’s a rumour don’t believe what you say. I Confronted her myself at first she didn’t wanna answer like “its none of your business” but after me persuading she told me that it was true. That explained all the ‘unsolvable problems’ we were having. Then I started to move on finally but I still loved her idk why.

Now it’s been 2 years since our breakup and She’s back with her ex (who leaked her private pictures to his friends while we were dating). I saw his new bf’s story of a note she wrote him while he was flying abroad, it said ‘I have always loved you, I knew you were the one for me’ and some other bullshit with her name in the bottom.

Now my question is, what do I do guys, my perception of relationships is fucked and I genuinely have turned really COLD with my emotions and don’t feel anything for anybody, I recently started feeling something for someone but she just wants to kiss me, make out with me, have a good time but she doesn’t wanna commit to me even after me being really clear about everything. Before this recent girl there was another girl who wanted the same. Should I just stop searching for someone?, is it a void that I’m tryna fill?, because I want a healthy relationship but I don’t have any hopes right now.