First, first, recognize yourself. There are countless small circles and groups in this world, but as a person, you have your own personality, your own specific experience and background. You can't fit in and cater to everyone's preferences or appetites. What you can do is to recognize yourself and find such a small circle of your own, or even if you can't find it, even if you are alone for a while, it's no big deal.
Second, find your true state. There is nothing wrong with being unsociable. He is a person's choice. It's just that the way others look at you will make you uncomfortable. How to avoid this discomfort? That is, you need to break through a realm within yourself. When you break through this realm, you can no longer care what others think of you. For example, when I first introduced myself in college, I was afraid that my every move would be hated by everyone and that my voice would not be liked by everyone. It was not until I went on stage more times that I slowly found my own state. I have my own personal characteristics. My personal characteristics are that it is the best state for me to talk to my brothers and sisters in my life. Therefore, for you, the best state is that you are very comfortable.
Third, don't force yourself to blend in. If you force yourself to integrate into the wrong circle, sooner or later you will be isolated and eliminated by people in that circle. Therefore, everyone should be good at themselves and then find their own group. Because the world is big enough, you will find a small circle that shares your interests and can make you feel at ease. So don't worry, do your own thing seriously, and one day you will find your own small group.