Why do most teenagers get embarrassed to show how they feel?

Answer 1

Because those are formulative years where still developing a sense of self so others opinions bear much weight which lessens as you age-they are afraid of ridicule

Answer 2

Teenagers may feel embarrassed to show their emotions due to fear of judgment or rejection from their peers. They may also lack the confidence or emotional intelligence to effectively express their feelings. Social pressures and norms can also contribute to this reluctance to be vulnerable.