The tournament is Swiss Style, which means you play against other people with your record, ie: if you lose in Game 1, you play against someone who also lost in Game 1, and if you lose that too, you would play someone who lost twice in Game 3
The card you want at the price you want will eventually show up
Apart from the overall best decks, it's pretty interesting to look back over what decks did well (and poorly) in each category because there are some trends worth noticing
UR Ultra Rare Apple Magician Girl X FIRE Level 3 [ SpellcasterEffect ] ATK 1200 DEF 800 Once per turn, if this card is targeted for an attack: You can Special Summon 1 Level 5 or lower Spellcaster-Type monster from your hand, then change the attack target to it, and if you do, the attacking monster's ATK becomes half its current ATK
This requires some luck when it comes to drawing cards in the first few turns, but using multiple copies of both Pokemon alongside the Poke Ball and Professors Research Trainer Cards will help us out