I'm Not Stuckup, I'm Shy And Introverted

I have anxiety so i had to do a group presentation today and i felt sick right before i had to go cause of my fear of public speaking. I always get nervous in big crowds of people too i usually try to stay in the corner since i almost want to be invisible. Sometimes i dont want people to notice me and how shy i am. I even pit my hand in front of my face to cover myself cause i get so shy. I wish i could be normal.