Lol Crashes in almost every game

My game is crashes almost every game since like the middle of summer. This problem has occured before but than it stopped. Now its really annoying becuase i cant play a single game without needing to afk, i recieved leaver buster like 10 times just this week. I tired updating my video card driver and java, also iv set my graffic settings to minimal, but it didnt help. If you look this problem up in google you can see that this problem is occured years ago and for a lot of players, and its still not fixed yet. And this is like the most annoying part of it: its a multipel year old bug and roit cant fix it, but they are adding new features every few weeks... Im just so upset that i cant play ranked because the chance of losing is almost 100%, and i also cant play with my friends beacuse most of the time they dont wanna wait 20 minutes b4 every game( where im propably going to afk...). Btw one of my friends also had this problem but it somehow stopped. If someone knows or have an idea on how to fix this problem please help me. (I conntacted the support yesterday about this but it refused to reply since, so im asking for your help.)