losing lp because of a afk shouldnt be a thing

theres is no reason you should lose lp in ranked because a afk ruins the entire game, no excuse for someone ruining a game where we had a giant lead, throwing it away, wasting my time, and costing ME lp because i had bad luck in teammates, there needs to be changes like this maybe even combine the lp that would be lost by the team and have the afk lose that much lp or straight up banning from even queueing for ranked for certain amounts of time for leaving and wasting 4 other peoples time and hard work but there is nothing fair about losing lp because of a single person screwing everyone over and getting off scott-free, i really want a riot employee to tell me why they havent did anything about this because it creates a very very very toxic environment