Congratulations on champion league and I don't blame you. It's tough to fight sometimes and getting champion chests will net you better rewards next season. I struggle in Silver/Gold league and the bots are there but I don't think it's as bad as champion/bronze hell due to the fact that some of them don't have maxed level cards.
champion is crazy, as the oldest players are the ones botting and they have decks that are near unbeatable. It will kill the game eventually, but they are in it for the short gains it seems.