When someone have a bad game , being angry at them or just insulting them , won't make your game easier or give you a Instant victory, you could instead try to help the person in difficulty and see what you can do to use this situation to improve your teamwork and try to work this out as a team. Bashing down your allies doesn't solve anything. It create more stress and make people lose focus. The person in difficulty just end playing even less focused and do mistake , and the players who cuss on him , lose focus on victory and just spam the chat with insult thinking it will change anything. It's easy to bash someone behind your screen but would you bash someone randomly on the street? I don't think so. Find a new ways to solve your problem than let your anger spread on your game, sincerely,
a player who got enought of the daily anger.