If you win celebrate and go on. Don't worry so much about what others think. Your self-worth comes from within. Slow down and absorb the present. Competition is a part of your journey.
Matches are simply a measure of improvement.
But no matter what the score, enjoy each stroke, hit or pedal stroke. Allow each of your competitions to serve as a training ground for your next one. And there will always be a next one. Expect the unexpected. Smile no matter what.