Giving up on life

So much has happened to me in the past few months, and I feel like my life just keeps going downhill. I’ve always been such an energetic and outgoing guy, but I recently lost someone who meant so much to me because of an argument we had. Essentially, there was a situation where she thought I lied about something even though I wasn’t lying, but she’s convinced that I lied to her and blocked me everywhere and said some hurtful stuff. Before that argument, things were already kinda messy between us and it severely impacted my mood. I also am alone at campus and don’t have many friends because I unfortunately commute and it’s so new because all throughout HS I had so many friends and was so outgoing and social and I feel like life has taken a turn on me for the worse. I really hope someone out there can give me advice on what to do next.