Tbh, go to the gym. Just dedicate yourself to studying and building your body. Hey, even if you don't have any friends after you graduate, you will definitely have a solid body that you can be proud of and a degree that shows you are a capable human being. If you do go to gym, it will be very likely that you will make friends within the first 6 months, even if you are not one to initiate a conversation. Hope you don't drop out, real world is tough and a degree will atleast give you an edge when you enter the job market.