I lost in a grappling match against someone 3 years older than me, I'm 14 he is 17, am I considered a bad fighter?

P.s. I'm heavier than him if that helps

i didn't see the fight so there is no way of telling but losing does not make someone a bad fighter. Someone can have really good techniques but when someone with the same skills or better techniques comes along then you have a good chance to lose. But it makes a great fight to watch, two competitors with really good skills and the admiration is really for both of them. In such a match there is not really a winner, so to speak.

If you consider your loss a learning experience and can analyze why you have lost and take it to the mat and train and make improvements then it was not a loss for you either but if you sulk and question yourself and worry about others considering you a bad fighter, you have lost. So suck it up, train some more and then get back into the ring. It's a learning process.

Not at all.

Losing is a natural part of combat. Learn from it and keep on training, you will be better for it.

It doesn't mean you're bad. It just means you're not perfect. Nobody's perfect though; mistakes are bound to happen sometime.

No way. Even "the best" lose.

Depends.

Are you a fighter? you didn't mention anything that indicates that you are, so your question is not applicable.

yes you are.

I lost in a grappling match against someone 3 years older than me, I'm 14 he is 17, am I considered a bad fighter?

P.s. I'm heavier than him if that helps