Help with my zombie deck?

This deck has too many strong monsters and the ratio between monsters that can be immediately summoned and special summoned is very bad. I suggest you get rid of some cards such as Shadow Spell and add more summonable monsters. Either get rid of the vampire genesis or 1 of the red-eyes zombie dragon. Also, you need stronger monsters. I don't recommend Berserk Dragon though. You should add more monsters, Il Blud, Terraforming, Field Barrier, and remove Scapegoat, Mystical Space Typhoon (replace with Dust Tornado), and get rid of either Tutan Mask or Dark Illusion. Also, your strategy might be slightly bad so think about that too.