My daughter and her friends didn’t even notice the fields because of the campus and City of Davis’s activities (Davis - LocalWiki), along with the proximity to everything.
It’s 20 minutes to Sacramento by car.
You can walk over (or bike) to the train station and go to Sacramento, SF or Berkeley for the day. The activities center has trips everywhere for the weekend (Napa, Tahoe, Yosemite, Sierras, white water rafting, etc.)
Have you met anyone at Davis? Made any friends? Joined clubs? Volunteered anywhere? Applied for an on campus or off campus job?
Have you had a crepe at Crepeville yet? There is lots to do in the small town. If that isn’t your thing, then visit Berkeley. You will notice a big difference in the environment.
Transferring, because you want a more prestigious university wont change your feelings of depression. If you can’t involve yourself in your environment and on-campus activities, a prestigious university isn’t going to do that for you.