My son had exactly the same problem in HS, terrible coach, (football coach as well) yelled and screamed but never showed them how. However, my son had a fabulous legion coach in the summer who was also his private pitching coach and he encouraged him and supported him all the way. he had a great summer in his junior year and that kept him going all through HS and then into college. My advice is find a good summer coach and/or good summer team.