Suggestions for the report system

I am a generally kind player in League of Legends. As such, I receive honors regularly, however, I am still human and have bad games. Because of these bad games I get reported, and the warning appears next time I play. This always frustrates me because I feel that I tried my best, but I was just bested by the enemy, which from my point of view is how LOL was designed to function. The aggravating part is that my teammates cannot accept this reality, and therefore I get reported for a simple mistake. It would be nice to know what they reported me for. At least that way I might understand them better and realize my mistake, or I might still disagree. This brings me to my second point, why isn't it possible to argue your side of the story when a report is submitted. As told above, players can get reported for having a single bad game, even though a majority of the time they perform well. If I could see why I was reported then maybe I could argue my case, and support it with any in-game evidence I had. This could be a huge step for the report system if implemented.