TFT window NEEDS to be closable/switchable

[TFT Related] I'm not asking to magically resolve the game window bugs, crashes, freezes etc but I PRETEND to be able to intervene if the window freezes or glitches, that means Alt-Tabbing or launching a task manager. OR JUST SIMPLY CLOSE THE WINDOW and relaunch the client.

Man do you know how frustrating is to lose SO MANY LP and even watching mercilessly your black frozen screen? Seriously, why can't I even close the window?!

FYI playing ethernet-cablet to fiber, on a gaming pc. There's no way it's my fault. It can happen if the game crashes or freezes but the players MUST have a way to restart, instead of losing everything (time included).