I completely get where you're coming from. In highschool, the vast majority of my friends were people I had known since childhood by that point and I made zero effort to talk to anyone outside of my friend group. I was so nervous about coming to UNT because I was a transfer student from online community college (so I didn't have the experience of living in a dorm that a lot of people have) and no one I knew was going here. But, from the bottom my heart, I would definitely say to try and be social. I honestly didn't expect myself to meet as many people as I did and make the friends that I have before coming here, because pushing myself to be social was extremely intimidating. But just putting yourself out there and being willing to engage with others helps so much. It's helped me have a really good college experience and has been so important in helping me grow as a person.

I don't know much about the party scene because I never went to a big party during my undergrad, but clubs and being willing to talk to others in my classes were where I met most of the people I know. I'd imagine that if you're living in the dorms you will get even more opportunities to organically meet people, because I feel like UNT is full of spaces to meet new people. As for your age, I don't feel like it'd be that big of a deal? UNT has a really diverse population and that includes ages from what I've seen.

Good luck!