Eccentric or Weird

How can I actually break down. How can I actually break down during the game? I'm not really drained out. I know I can run, I can still continue, but I didn't want to, I refuse to. Why am I so selfish? Just because I don't like the group I am in, that doesn't mean I don't put in my best efforts. I indeed did not put in my best efforts into playing the game, and I'm just so freaking upset with myself. I gave up on my teammates when the game haven't even started. I give attitude all the times when I don't feel good, I show black face all the times when I don't give a damn. I'm just not good enough, useless and worthless.