That sounds like a bug. It sometimes happens that for whatever reason the game client malfunctions and kicks you out of the match. Whenever this happens once, I recommend force closing the game client and then restarting it to make sure the game is running from a clean state. I also recommend doing that in general before doing anything critical, like doing an important Battlegrounds match or other difficult content.
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I think that tou need to faind a solution for these kind of bug