Riot should punish those who decides to go AFK

I know this sounds harsh but in my opinion going AFK is the worst form of toxicity, you can have a bad game which result losing your lane that is no problem, you can still win late game if your team manages to win other lanes or you can just have a strong late game comp.

What you cant win is playing 4v5, I know some of you have won with one less player but if you think about it how many times have that happen? My wins with one less player are roughly 1 out of 70 games, with a hard feeder 1/5 games maybe.

People who rage quit should sustain the LP loss from the whole team, this means that the teammates who gets matched with these toxic players should be 100 % protected from losing LP when losing.

These ignorant players that decides to ruin 4 other peoples time and game play should get really punished, I know that banning is a good punishment also but that wont give my LP nor time back, I can accept that a player has a bad day or even just a bad game but that is not a reason to exit the game.

I know that some people cannot control their internet connection and sometimes dc's more often that others but then again why are they even playing a multiplayer game were 5 people are needed to play 100 % throughout the match.

So...who is with me giving these toxic afkers hell?