Welcome to the forums! Hope you stick around.
Fire isn't that bad. Yes, deflagration can be quite harsh but Rain of Fire is quite overcosted. Darkness is the best element to start with, though early on they can all be pretty good.
Dimensional shields are a really powerful card, and so they're overused in Bronze. Since everyone packs 6 dims in their decks, you have a very high chance of getting 'em from spins. Not getting a Fahrenheit... I had the same problem with Discords. Which was harsh, since Discords can be really strong. But as long as you keep at those speacial spins, you'll soon find the rares of your desire.
Anyways, time for the most important question of your life: Donuts, Noodles or Bacon?