If it’s an instate public, there’s a good chance that there is something and someone for everyone. I think when you’re at a big school like this is easy to see the loud people and the people partying. Look for the people sitting alone or in a small group. Find the off beat clubs that speak to you. Attend their events consistently for 4-6 weeks to see if it’s really for you.
I’m a parent now. I had an awful freshman year at my first colleges. Guess what. Rough transition at college #2 as well. It can just be a difficult transition anywhere. Look around. Many people are in the same boat. If you are doing well academically, like your roomie, and are trying some other aspects of campus life. You really are doing better than many making this same transition. Making sure you are getting some fresh air and exercise is a great idea. Eat regular meals - pick some fruits and veggies.
I’m not saying don’t transfer. I would just say don’t assume transferring is going to be magical and transformative. I’d want there to be a very compelling reason before I’d be excited about my kid transferring. And if part of the reason you chose your school is financial, it may not be easy for your parents to make a leap to a more expensive school.