Last semeseter of college with few friends. Is there even a point in trying anymore?

Title, essentially. I'm graduating college soon and I just don't have any friends really. I have a couple, but we only really text and rarely hang out. I have my sports club but every time i try to include myself and talk it feels so awkward.

I want to be social really, really bad. My family says I'm pretty good at talking to them and I'm super social and confident with my very close friends. But even with my friends from high school and the sports club, I just...struggle so much. I don't know what to talk about, I don't know how to start, and I'm completely terrified of rejection.

People just say to let the convo flow naturally but I can't even do that. The words get caught in my mouth. I don't know what to do. What do I do?