Repair CLient

I'm so sick of this client, every time i run LOL it tells me to repair it for whatever reason, then i go start a ranked match and when i'm 99% loaded it crashes and tell's me it can't find a esential bla bla champion VI and i have to repair it again while my team plays 4 v 5 and hey the best part is i got flagged by leaver buster and got 5 low queue matches.

Tell me, why is it my fault and why dose my team have to lose lp because of me ? If you see they have a afk from the beginning of the game why dont u give them loss prevented or at least -10lp not -25. Why do i have to get -25lp when someone was afk in my team.

Why do i waste my time trying to climb the ranked ladder for thing like this to happen and ruine everything.