I have someone in my game admitting to trolling and feeding

I always admit to these things, but conspiracy is not bannable

Believe me for going afk, five games with 5 minute waits is not a slap on the wrist. It got me to start working on changing my behaviour. Frankly the 20 minute wait was too much - it increased the odds of things beyond my foretelling or control of interrupting the game. Now that I have not gone afk more than once or twice in months I am quite proud. And then, it was for only 3 minutes at a time. I think that the current system is too harsh frankly.

Feeding is anytime you die so, should you be banned for dying in game? Are you talking about intentional feeding? Intentional feeding is very, very bad but I almost never see it in game. Usually I see people flaming about someone having a bad game. It's very rare that I would report someone for intentional feeding. Actually it's rare enough that when it does happen, it is usually triggered by the constant flaming of an ubertroll. I tend to report the ubertroll as well.

Trolling is deliberately provoking someone so that they engage in negative behaviour. This is the worst kind of toxicity; these people set out to destroy teamwork from early on in the game. Never, ever do this. Of course, you probably mean lesser evils like:

Flaming in chat. I had a big problem with joining flame wars but tried to change my behaviour. I was never punished for it. I never started them, but if I got trolled I fed that troll hard. When people sided with the troll I would go berserk in chat for about a minute. I've stopped doing this because it's pointless. Just report the troll after the game, and anyone who joins it. If she's still provoking you 30 seconds after the initial comment, you are not communicating with her: She's a troll. Not only that, but she has no desire to take responsibility for ruining any sense of teamwork later in the game.

There is an important lesson I have for you here: AFKs, Feeders and Flamers can all be encouraged to go back to good behaviour with in game chat. Pointing out that their Support is trying will quiet a flaming ADC and thereby stop the Support from intentionally feeding. AFKs can be prevented by never siding with the trolls, even if they are part of your premade. Afks can be prevented by pointing out to flamers that everyone has bad games, or by saying kind words when a troll bans somebody's champion in champ select. Feeders will generally stop feeding when somebody on their team acknowledges that they perceive they were wronged - usually trolls trigger this sort of behaviour, simple flamers do not usually have the persistence to get somebody to the point of doing this.

If you follow my advice you will see most negative behaviour become minor incidents in game. Respect everyone's feeling, cultivate a sense of teamwork while playing and remember that most people engaging in negative behaviour can be brought back to their senses. Even this guy .