How do I know?

Hi, While waiting for the game to load, in the loading screen ( with the loading bar at the bottom of the screen and all 10 player`s icons showing on the screen) , how do I know If I crashed? For example, a game in ranked 2 mins ago - The loading page was at 100% and the game wouldn`t start. I didn`t know what to do, I had no bug splash or anything to inform me and by the time I decided to crash the game forcefully and reenter it, the game has ended and me titled as an afk`er. How is this fine? how is this correct? How am I supposed to know and prevent this from happening? Thanks.
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