I realized that. In the last month, I almost rarely go out, because I feel ashamed to go out alone, so-called "shame", "shameless". Please...

This kind of thinking is obviously just a personal overthinking. If this is the case, only married people can go out. Go out more with friends for a walk, play ball, run, watch a movie, adjust your mind. Being alone for a long time can make you sick. After all, people are pack animals and need to find presence in a group.