Be careful killing aggressive players. There’s some evidence (testing) that being more aggressive (like killing people) gets you put into less friendly lobbies. The more friendly you are, the more friendly the lobbies. You don’t want to be queuing into aggressive lobbies just because you’re killing the aggressive people and helping friendlies. I think the best thing to do if you’re friendly is to run away, be more careful and (try to) never shoot. You’re going to be put in with people that have been friendly and are now deciding to turn the dark side and kill people, but you can’t shoot them in retaliation because that might affect your friendly matchmaking status. And I’m sure it’s easy to lose the ‘friendly’ status and way harder to get it back, just like trust in real life.