I play travel softball, 14u, and can someone explain to me why i got pulled?

This is my first year playing on a team, where the rest of the team has been playing together for 4 years, and we had a scrimmage today. I sat the first two innings (i missed the last practice), i played left the next one, and then i got put into second base. One of the batters bunted, and the first baseman picked up the ball, but i couldnt get to first fast enough, so noone could make the play. My coach then switched me back to left field. We were already losing 7-2, and everyone was making a lotttttt of mistakes. In that inning, our pitcher walked 6 girls, we dropped a pop fly, our catcher made a throw 2 feet over the third basemans head and rolled a ball to first, several ground balls went past our infield, and we just werent into the game. but i was the only person who got pulled, or even yelled at. is what i did worse than everyone else's? :/