What are the insecurities of an adolescent?

the insecurities of an adolescent is just basically how we be ourselves and learn that people will be okay with it. We mostly put up a mask because we're afraid that people will laugh at us. We don't open up to anybody because we're afraid that the information will be passed on. We have self-doubt. We don't like it when people laugh at us and therefor we hide ourselves. We are unsure where we belong and how to be ourselves.