I don't know why my water deck isn't working. How do I make it amazing? Could someone please help?

I actually found it hard to follow your deck. Try focusing on a couple of strategies rather than a bunch. Try adding some Moray of Greed for draw power, and try to get it down to 40 cards in the deck. Also, if you can manage it, you will want Bottomless Trap Hole, Solemn Judgment, and Trap Dustshoot.

try to focus on one type of play. different cards have different ways to play and if you stick with those just get the proper trap/spell cards. take the metalizing parasite lunatite out though, i have it and its high costs and almost useless effect make it practically unusable in a game