how come i have every card unlocked and still cant get past rank 12, i just started recently if that has anything to do with it

that has nothing to do with it; you're just getting really unlucky

Observe other players that are better than you play decks that you're interested in.

Learn the mechanics of the deck and practice around.

Sacrifice a few goats for rng every blue moon.

you started recently and you have all the cards in the game ?

ya outside of some tgt class legendaries which are kinda useless

Skillstone LUL
more like RnGStone

having cards doesn't mean u play properly... it is like saying: i bought Usain bolt shirt, short and shoes and i still suck at running...

i would make a face rush deck like shaman and you will get past rank 12 easy

What does the number of cards matter? You can only have 30 in your deck and some of the best decks have cheap cards (zoo lock)