This deck is a pretty boilerplate YP aggro deck. It's competitive since the August 13 2021 balance patch.
It's big-little-body aggro. Play all your cards at once, buff them taller, hit face repeatedly. Win by turn 5 or not at all.
The main idea is pretty simple - try to get 3 of your 1-drops next to each other, hit them all with Juiced, knock down anything that stands in your way. For 2-3 turns, your minions should be just 1 health tougher than your opponent can put down in a cost-efficient manner. You don't have long before board wipes start dropping, and midrange minions are simply more cost-efficient for their size, so make your temporary advantage count.
Planning for first burns matter a lot. If you intend to burn yellow turn 1, then purple on turn 2, you want a yellow 1-drop on turn 1, then another yellow 1-drop plus a purple 1-drop in hand to place on turn 2. That's 2 yellow and 1 purple 1-drops. If you burn purple turn 1, you want 1 yellow and 2 purple 1-drops.
If need be, you can play 2 purple minions on turn 2. This will prevent you from playing Yara or Vicious Cycle on curve, so burn accordingly.
To play Juiced turn 3, you will have 3 mana and YPP gems, so you should try to keep a yellow 1-drop on hand to play with Juiced (2PP).
You regularly burn to 4 mana and YYPP gems, and may stretch to 5 mana if you need to play Mantle of Authority + Instabeast or Racer in Shadow + Instabeast in a turn. Ideally the 5th gem is purple, but it's not a hard requirement like the first 4 gems.
To make the deck cheap and Mythic/Rare-free, you can replace Yara from Arawaka and 2x Cold-Blooded Killer with some combination of Shinobi of Fire, Pack Mentality, Vicious Cycle, and/or Instabeast. 3x Shinobi of Fire is preferable, but if you're looking for a budget version, you make do with what you have.