Cilent crashed through "critical error"when I tried to get into ranked twice

When champ selection finished and was waiting for loading screen, I got a "Critical error" pop-up that kept saying I couldn't load and that it needed to create a dump file yet it said I was in game? I got lost 2 ranked games because of this clients screwing me over, I didn't change anything to make this happen, it literally just decided to do this today, and it happened twice. This is very frustrating considering it makes me want to not play this game since I tried really hard to win the games where I earned my lp for it just go down the drain cause of this client having ridiculous issues. The more issues like this happen, the more I wish for this to get resolved for others so they don't get leaverbuster or screwed over because this client, I never leave games so it really bothers me that I get punished for something that isn't my fault. If there is any re-compensation for this, if not I'll take the loss but holy this is ridic. If that is a solution to this error, would be appreciated thanks.