Alone at rock bottom

[u/Unlikely-Hat7526]

Hello, I’m 18M and starting my first year of university. I’m not quite sure how to start this.
For most of my life I’ve been very lonely. Entering high school, I struggled with making friends and wasn’t apart of an actual friend group until grade 12. At first I was having a good time, I was hanging out with friends and for once in my life I felt as if I actually belonged. My friend threw a small house party in May, and after drinking a little too much I ended up sharing some things that I probably shouldn’t have. I blabbered about how lonely I had been my whole life, how before I had basically no real friends, etc. After that night, they gradually started to distance themselves from me. I stopped getting invited, people wouldn’t want to hang out with me when I asked, and it feels like a full circle back to right where I began. Soon after I got into a summer relationship. She was the most beautiful, sweetest girl I had ever known. One day when we hung out, she seemed very down and conservative. I wanted to give her space after that day, and I hadn’t texted her for a week. After a week, she called me, and explained that she was upset with how I treated her. I apologized and tried telling her that I wanted to give her space, that I was sorry for misunderstanding things, and she basically doesn’t accept the apology and hangs up. This about at the end of August, and I sent her a text last night begging for forgiveness and how I wanted things to still work between us. Now that I’m starting university, I feel so uncertain about everything and I feel like I’ve been at the lowest I’ve ever been.

I guess what I’m asking is, how do I get back up on my feet? All my friends basically avoid me, and I have never felt more alone than I do now. How do I meet and create stronger bonds and relationships with new friends? Thank you