This is not a reflection on you as a person. You were unsuccessful in this attempt, but that does not mean you are bad or suck.
And it definitely does not predict your future successes.

You are young. You will have SO many more chances.

Trust me.....I know. I was held back twice in school (stupid eh)...today I am a doctor (a specialist).

Don't let it knock you down! Pick yourself up and look for other opportunities or other ways you get fulfill your interests!

Hang in there!