Yu-Gi-Oh! GX: Spirit Caller

Hey all. I have been playing Yu-Gi-Oh! GX Spirit Caller on the Nintendo DS and I have been rolling along the game just barely getting by... I have been having lucky fights thanks to my terrible deck building abilities... Then I get called out to the Lake to fight Chazz... And there is no way I can beat this guy! I am aware that it probably has something to do with the fact I have a bad deck to fight this guy, and most likely not enough cards... So I was wondering if maybe I could get some help with constructing a better deck all around to help me around the game?

Here is what I have as my deck so far:

7 Colored Fish x3
Battle Ox x2
Blackland Fire Dragon x2
Blue-eyes White Dragon x1
Crawling Dragon #2 x1
Gazelle the King of Mythical Beasts x1
Koumori Dragon x1
Megazowler x1
Millenium Shield x1
Mystical Elf x3
Sword Arm of Dragon x1
Zoa x2
D.D. Warrior x1
Giant Rat x2
Man-Eater Bug x1
Muka Muka x1
Princess of Tsurugi x2
Sangan x1
Steel Scorpion x3
Axe of Dispair x1
Brain Control x1
De-Fusion x1
Ekibyo Drakmord x2
Graceful Charity x1
Graceful Dice x3
Hinotama x2
Rush Recklessly x1
Sparks x1
Swords of Revealing Light x1
Tremendous Fire x1
Yellow Luster Shield x3
Acid Trap Hole x1
Attack and Recieve x3
Ceasefire x1
Chain Destruction x2
Light of Intervention x1
Magic Drain x1
Magic Jammer x1
Minor Goblin Official x1
Negate Attack x2
Reinforcements x2
Riryoku x1
Shift x2
Solemn Judgement x1
Solemn Wishes x1
Two-Pronged Attack x1

# of Cards: 70

I have collected 85% of the Legend of the White Dragon booster packs and 89% of the Ultimate Power Booster Packs.

Thanks in advance to those that help me out!

try this it got me throutgh the game:
Dark magician X3
D.D. Assailant X1
D.D. warrior X3
D.D. warrior lady X1
Dark dreadroute X1
Dark magician of choas X1
Golden homunculus X 3
Helios primordial sun X3
Helios duo megistus X3
helios tris megistus X3
Kycoo the ghost destroyer X3
slient magician lv 4 and 8 X1each
axe of despair X1
black pendant X1
Brain control X1
Dark core X1
Dark magic curtain X3
dedication through light and darkness X1
Dimensional fissure X 3
level up! X1
lightining vortex X 2
mage power X1
Mausoleum of the emperor X 3
mystical space typhoon X1
nightmares steel cage X1
sealed gold coffe X3
D.D. dynamite X1
macro cosmos X3
mirror force X1
Raikeki break X1
ultimate offering X1

I like to have a deck focused on a certain theme. My Warrior deck is my best deck(not a lot of strong monsters there. The strongest card there is Gilford the Lightning[would've been the Legend if he was in this game...])