Can't put my skills into a match
I am 14 years old and I play ok tennis.
When I play against my father or anybody else just for fun, I am able to create very good shots that with them I would be much better than many players I lose to.
The problem is that in front of my coach in practices and especially in matches, I can't perform those shots.
They go into the net or out, and after losing a game or two I have no choice but to go defensive and not to try making winners and then I lose the match.