Can you help me improve my deck

Monsters:
Demise, King of Armageddon (x3)
Doom Dozer (x3)
Metal Armored Bug (x3)
Manju of The Ten Thousand Hands (x3)
Senju of The Thousand Hands (x2)
Insect Knight (x3)
Great Maju Garzett (x3)
Morphing Jar (x1)
21 Overall

Spells:
Trade-In (x3)
Swing of Memories (x1)
End of The World (x3)
7 Overall

Traps:
Threatening Roar (x3)
Magic Cylinder (x3)
Mirror Force (x2)
Just Desserts (x2)
Torrential Tribute (x2)
Secret Barrel (x3)
15 Overall

Side:
Lava Golem (x1)
Level Limit - Area B (x1)
Scapegoat (x1)
Spirit Reaper (x1)
4 Overall