Um, the first case doesn't make sense. However, all the others clearly present you in a negative light. "gg noobs" or "fail" and telling your team that they suck is no way to play a co-operative game that requires team work and getting along with other players.
As I said, I'm sure the game in the first case was a nightmare to play, but in the others all you do is blame your team and mock the enemy. True, the community is bad but that's what the tribunal is for. By giving you a temp ban perhaps you'll see a new light in your interactions with other players.
Losing sucks and it can be a pain when dealing with players that lack certain skills. But try to be positive and if you can't be then just be silent.