Losing because of a GLITCH IS F@#kING ANNOYING

I started up a ranked game after having a perfectly normal match, then once in lane my screen would not unlock, i couldnt open store, my game went to windowed mode instead of fullscreen without me touching anything, got massive lag spikes with my internet being fine, and have a garen flame me because my client is bugged and i couldnt do anything about it. Asked teammates if there was a way to fix it, and doesn't tell me how to attempt to fix it till 15 minutes later in the game. tried closing league off and reconnecting still didnt work. FUCK THAT. So much BS in that, couldn't even lane right. How the hell do you fix the interface when that crap happens. lost so much LP just because of that.