Monroe
I'm also in a 2 year community college, and from my experience, people are for the most part busy with themselves and just getting the necessary work done. Not everyone goes there with the mindset of meeting new friends. So, if you want to get someone's attention and try to socialize, you have to attempt to do the approaching yourself. You can't assume that no one likes you - how can they not like you if they never met you or talked with you before?
When it comes to working in a group, you can't wait for someone to address you. Try your best to just speak up in the group and join the conversation. If you don't say anything, the group might just assume that you don't want to talk, that you just prefer to sit back and listen. I never talked to anyone in college, nor did I voluntarily speak up in groups. But in my case, I didn't want to make friends at that time - but if you want to make friends, you have to try to take the initiative on yourself. And believe me I understand how hard that is, my social phobia used to be incredibly severe. But I'm just saying that, speaking up is really the only way to accomplish this, it's how everyone does it that doesn't have SA, it just comes naturally to them. But for us, we need to extend the effort.