Are you shy or confident?

I am shy and I am afraid to dance in front of people. The reason is because I feel like all eyes are on me and I am being watched. It feels so uncomfortable. I am also afraid to perform, give a speech, and a presentation in front of multitudes or even a small number of people. I have stage fright so my body trembles uncontrollably, I have butterflies in my stomach, I feel dizzy, I have rapid breathing, and my heart beats very fast. And because of this I make up excuses to hide in the restroom. I don't have confidence or courage. If only there was a way I could conquer my shyness and stage fright. What would be the audience's reaction? What if they criticize me or make fun of me? I don't want to make a mistake or make a fool of myself.