Communication

No matter what, communication is important in ANY GAME! It doesn't matter if the game is 9v28 in score (and your team being the 9). You don't talk negative about your team, just try to give them tips (when you're out of fights) and tell them what you have planned (or ask for plans). There should never be a moment where you have to talk bad to your own ally, that is equivalent to team fighting yourself...