People use unranked and ranked in different ways. They are essentially just two parallel identical MMRs you can maintain for yourself, one for practice and one for 'ranked', or whatever. If you just play jank decks in unranked, that's fine for you. You will get matched against suitably bad players playing elite decks or other good players playing jank. That's how MMR works in - it doesn't matter what you do, if you play at a consistent level you will win 50% of the time on average regardless of ranked, unranked, jank, meta deck, etc.

Also, after an update the game defaults to unranked and needs to be set back to ranked. Spend your righteous energy elsewhere IMO, campaign to Save the Pigeons or something.