The League client is awful.

I was connecting to my ranked game, and my game loaded to 100%, then just stopped. It froze. I thought, my it is taking a while, only to realize that it was my client that was frozen. It is not my computer's fault, as this has only happened on league. I tried to close the client, but it would not allow me to minimize or alt + f4 the screen, so I had to log off, then log back in to my computer. Once I logged back into league, I lost 16 lp because within that time, my team remade the game.

TlDr; The client froze and I'm salty that I lost 16 lp because the game has bugs. Please fix.