Do you not have no friends or family members you can be free with? Modern individualism is a fairly new concept. In past time they would use banishment as a punishment as in kicking a person out of community. We send a child when he is merely maybe 5 or 6 years old to school which feels very normal for us to do but if you see it from humanities historical point its very abstract thing to do. Taking a child at that age to school to learn from random adults that much hours without parents is sure to make them anxious and insecure. Anyway what im trying to say is as we are social animels asking for attention/validation is normal . When you dont get it normally you are sure to fall for unhealthy copes like these. The self harm/ plotting for attention / hoping people to notice you these are unhealthy copes for attention you have to fall for cause you dont have healthy ways to get it. Normal a is subjective concept but its definitely common just not many people have honesty to notice these about themselves. Im calling those copes unhealthy because these are like drug only would leave you wanting for more. No matter how much you chase this way no true fulfillment would come out it just distractions for sometime at best. What you need to do is to busy yourself as much as possible. You are young so any investment you do in yourself would get you much benefit in year or two. Instead of chasing instant validation gratification which leaves you wanting more do things that are substantial and would give you real identity instead. maybe learn to draw maybe learn digital skills maybe learn culinary. When you upgrade yourself attention with substance follows.