League Uses Up Too much Mobile Data Now

I recently ran into a problem with League, and I don't know whether it's an isolated problem or if others are experiencing this, but League games have begun consuming over 400mb of my data in a single match. It doesn't help that this didn't happen due to updates, but it happened when I tried playing a bot game. Please, I need help. I'm a low budget guy and I can't afford more than 4gb in a month.
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