If you got placed into LPQ then that means you have a history of leaving/afking in games. Players start out with built-in leniency in LB that slowly but surely decays when you leave/afk in games. When it's up, that's when you get placed into LBQ if you leave/afk again. By playing games through to the end though (without leaving and/or afking in them mind you) you can slowly but surely build that leniency back up. Errors and real-life emergencies happen from time to time and that's why the leniency exists. However, it is the players responsibility to make sure that those issues come up as little as possible for them. If they don't and/or refuse to do so, then the fault lies with them and them alone.