So let me get this straight:
You feel like you should be able to hold off several zombies as a lone human and be able to single handedly wipe out the human team when you're a zombie? Newsflash! Zombie Escape IS a numbers game. It's TEAM ORIENTED for both sides. Just because you'd love to wreck the human team as a solo zombie doesn't make it fun or interactive. You need to work in numbers on the zombie team, to overrun the humans.
As for human side, you have so many items on most maps it's ridiculously easy to win maps with a half-decent human team. It's not the ammo, it's the 12 items the map gives.
Oh, and ask BotoX to remove bhop on ZE for 1 week and see how god damn easy the game becomes on GFL.