Zero Tech Decks Need Help Building My Yugioh Deck... Please Tell Me What To Change To Make It Tournament Worthy.?

Need help building my yugioh deck... please tell me what to change to make it tournament worthy.? - zero tech decks

Monsters
Gogigia Gagagigo
Summon Reactor SK
The regeneration of the mother
Pyramid Turtle
Infernity Necromancer
Breaker the Magical Warrior
Red-Eyes Zombie Dragon
Blackwing - Shura, the blue flame
Zombie Master
Old Vindictive Magician
Goblin Attack Force
Chamberlain of the Six Samurai
Reaper of the Cards
Immortal Earthbound Wiraqocha Scratch
Ryu Kokki
Gladiator Beast Hoplomus
Crystal Seer
Defense, Magic Knight
Zero Gardno
Cyber-Tech Alligator
Paladin of Cursed Dragon

Magic cards:
Giant Trunade
Big Bang Shot
Terraforming
Zombie World
Sword of Light of Revelation
Mage Power
Arrow Breaking Spell
Shrink
Card Destruction
Pot of Greed
Book of Life
Magical Stone Excavation

Trap Cards:
Bottomless pit
Semi-or-nothing
Defense Draw
Remote Revenge
Magic Cylinder
Fake Explosion
Waboku




Basically, I bought Command and the world of sorcerers and zombiesBooster Packs name a few. What should I buy / do in this game to better it?