Sometimes players are unhappy with their role and become jealous of teammates. Don't fall into that trap. You must always hope your team does well. Unhappy players can be a distraction and distractions usually spread, resulting in an unhappy, losing team. Occasionally, parents will get into the act by telling their children they should be on the power play or playing on a line with different players.
Parents can be jealous of other players, too.
If you want a different role, work hard in practice to improve your skills and the coach will use you differently. But remember, coaches are more likely to cut players who won't accept their role or be a team player. There has never been a successful team without unselfish role players. When the U.S. Olympic Women's Ice Hockey Team won the gold medal in 1998 and the U.S. Men's Team won the World Cup of Hockey in 1996, they had great players who were all used to playing on the powerplay and being the best on their team. But they won because they were willing to play the role the coach asked of them.