could anyone advise me on how to make my deck better, i Know its rubbish buts the best i could do with the little amount of cards i have.
here's my deck.

monsters
1x Blue eyes white dragon
1x black luster soldier
1x luster dragon #2
1x helpoemer
1x double coston
1x grave protector
1x gravekeeper's guard
1x kaiser sea horse
1x lord of d.
1x poison mummy
1x regenerating mummy
1x solar flare dragon
1x vampire lady
1x wall of illusion
1x zombyra this dark
1x archfiend soldier
1x battle ox
1x dark blade
1x la jinn
1x mystical elf
1x neo the magic swordsman
1x opticlops
1x ryu-kishin powered
1x skull red bird
1x the dragon dwelling in the cave
1x warrior dai grepher
1x gaint soldier of stone

spells
1x black luster ritual
2x change of heart
2x monster reborn
1x swords of revealing light
1x the flute of summoning dragon
1x card destructiuon
1x pot of greed
1x axe of despair
1x buster rancher
1x megamorph
1x dian keto the cure master
1x goblin thief
1x ookazi

traps
1x rageki break
1x really eternal rest
1x shadow spell
1x thunder of ruler
1x trap hole
1x gift of the mystical elf
1x just desserts
1x jar of greed

i have 50 cards in my deck and i always lose when i play with them, i need help.