What made everyone so obsessed with looks?

I think I've been obsessed with my appearance since I was in middle school. The reason was that after I went through puberty, I became interested in my appearance, and when I saw good-looking people or actors, I was envious. I kept comparing them and lowering my self-esteem. At that time, I was just thinking like a child at that age that I should get minor plastic surgery.
 
The real turning point of modern times was that during my freshman year of high school, I was the person who was commonly called a magician. They said that if I put on a mask, it would be better, but if I took it down, my cheekbones would stick out and my eyes and nose would not match. It was my first shock to hear that, and in the cafeteria, they told me to take my mask down when eating. Each time, something my friends said strangely stayed in my memory for a long time. The funny thing is, I felt the attitude of kids who didn't know my subordinates towards me and their attitude towards me when they found out about my subordinates were different.
 
Another reason was that the friends of the friends I became close with also happened to become close . At the time, in the beginning, he hung out with the guys he used to hang out with and a group of girls. His friends had good-looking faces. When he saw the girls' attitude towards them change, he thought, "Oh, I have to be good-looking, too," and became obsessed with it like a mental illness. I think I did it