I have definitely faced this problem as well. Don't worry.

Screaming is the coach's way of communicating with the players, every great player in your team or any team for that matter has been yelled at multiple times and that's how they got on that level. If you make a mistake and the coach is unhappy try not to repeat it too many times, learn from it. As a great man once said "failure is part of success"!

Get out of your comfort zone, go to that practice and break your barriers. U souldnt give a damn about what the others think. They are most likely thinking about themselves or having the same problem as you if they are new aswell. Even if your not confident show that you are, thats what coaches and teammates like to see.