Client crashes every time i play ranked

Started a game of ranked, my client crashed, didn't reconnect in time, got leaver buster, made a thread, got no answers, then it got deleted for no reason. Ok. Played 5 games of normals/arams so my leaver buster would expire, had no problems. Queued for game of ranked, guess what, my client crashes again. Forced to restart my computer, i restart it, launch league client, moves me to NA server automatically, tells me the things like i just downloaded the game, and while i do all of that, my team remakes. Also got another 5 games of lower priority queue. I have no problems while playing normals, but as soon as i try and play ranked, client keeps crashing.

When i play games that require better computer than league does, i'm having no problems at all, but when i play league i keep having problems with client crashing, bug splat and my ping going 200+ for no reason. I tried going into task manager and closing almost every program before playing league and im still having the same issues. My last thread got no comments and aftrer 1 day it got deleted(idk if it got deleted but it doesn't exist anymore). If anyone knows how to fix or at least reduce the client crashes, please help.