Dormitory hygiene and personal education problems, I feel very tired in the process of getting along with my roommates. Maybe you are not the same person at all, and you have different ways. Instead of seeking common cause, it is better not to play together.
Introverts are also easy to be rejected, for example, you are introverted and inarticulate, and you haven't become good friends with your roommate for a month. And your roommate has already formed a group of two or three people, and you have become a forgotten person. You feel isolated and psychologically rejected. People are mutual. You can think about whether you have done anything inappropriate to make my roommates unwilling to get along with me. After discovery, correct it in time and take the initiative to show kindness. If you are excluded because of introversion, if you don't want to change, I personally suggest that you talk to your roommate more actively. After all, you are roommates who will live together for four years. If you feel unhappy when you go back to the dormitory all day, your study will also be affected.
Because he may have done something you don't like very much, or you don't like it very much, and you can't accept what he did. You are the one who wants to get along with him, so I hope you can communicate with him directly. Don't take these things that you don't like him to heart, or you will be more uncomfortable with him over time.
When you meet like-minded roommates, you should cherish them and get along well. If you can't get along, you don't have to force it. As long as you don't hurt each other, don't mind too much.