First, take the initiative to communicate with others, such as simply saying hello, not asking you to talk in Kan Kan at once, but asking others to say hello. I think others will respond accordingly. Only when you are recognized by others will you feel happy. It is important not to expect others to always take the initiative to associate with you.
Second, when dealing with people, we should pay attention to their affirmation. What you don't like is not necessarily bad. This is what you should pay special attention to. Praise and identify with each other from a technical or more perspective.
Third, find more friends with the same outlook on life and values, so that you may get along more widely and for a longer time.
Fourth, at work, strive to realize your own value and make your own achievements, and don't let others feel that it doesn't matter whether you are there or not.
Fifth, you can go to a regular psychological counseling center for counseling, because there are some personality or cognitive factors, one consultation can only make some progress, and face-to-face counseling may be better.