I am a college freshmen and I feel like a bit of a loser...?

Today wasn't that great of a day for me. To give some background, I had a few friends in high school that I talked a lot to. They were more than acquaintances, but not quite really good friends. But still we talked a lot and I was happy to know that they would be coming to this university with me. So, I start the school year a couple days late, which made me feel a bit outcasted, and when I saw these friends at school, they rarely even talk to me. I don't know if it's because they are all girls, and I'm a guy, but they are the only ones I know that graduated with me and entered college with me, and I feel like I'm really being ignored.

I've had a history of being shy/awkward, especially in 11th grade, when I had next to no friends, but I really felt like I overcame that in 12th grade. I was so proud of myself for doing that and I just felt like I would continue to do so in college, but it is as if all of my social skills just evaporated over the summer, because I still feel like that timid, awkward 11th grader that I didn't like.

My question is what should I do to try making friends? My college is pretty small, and I see the same people frequently, but I just feel like I am not "popular" or "cool" enough to talk to the people that seem to have a lot of friends, and I am only outgoing around my friends, which makes it harder to make friends at all. I am in a few clubs, and it has helped a little bit. Last year, I even felt like I was even good at talking to girls but now I can barely hold a conversation. I just feel really disappointed in myself, I guess, because I was so happy with overcoming my shyness and I feel more socially awkward than ever. If anyone can give me some advice if they have been through this too. I am a freshman in college, if that helps. Thanks