Low self esteem is where you don't feel confident about the way you look.When people have low self esteem they don't feel that they look good. Which if someone where to have high self esteem, they would be confident in the way the look.
Low self-esteem is how you feel about yourself, feelings of low self-esteem include: feeling bad about yourself more than you feel good. lack of self-respect, low confidence
Seeing other people online that you may persevere as prettier than you or having a better body can have make you perceive yourself as ugly and not good enough.
Herd immunity is a form of immunity that occurs when the vaccination of a significant portion of a population (or herd) provides a measure of protection for individuals who have not developed immunity
