Bad players will always make excuses.
I wanted to show you this thread not to boost my ego, but to show you why making excuses only hinders you and your team. The game I just played was a disaster start to finish, we had an ADC flaming their support because he was "supposedly trolling", a support that then refused to communicate(whether this was a direct or indirect cause), and top flaming me for not being able to take "objectives" and "kill-stealing" for the duration of the game. Despite what you might expect, I still blame myself for the loss. I couldn't roam enough lanes in enough time to help my other teammates. Unlike everyone else, I refuse to make anymore excuses. That is why I will eventually climb out of bronze, and they won't.