Michael's Zombies anti knockdown

so I made a script where when you get hit, the boogyman starts knifing people and saves u from death.
also, buy the bowie knife to make boogyman stronger. also, it works with juggernaut

https://www.roblox.com/games/8054462345/Michaels-Zombies

local localPlayer = game:GetService("Players").LocalPlayer

local function booga()
   local closestPlayer = nil
 local shortestDistance = math.huge
   for i, v in pairs(workspace.Ignore.Zombies:GetChildren()) do
       if v:FindFirstChild("Humanoid") and v.Humanoid.Health ~= 0  and v:FindFirstChild("Head") then
           local magnitude = (v.Head.Position - localPlayer.Character.Head.Position).magnitude

           if magnitude < shortestDistance then
               closestPlayer = v
               shortestDistance = magnitude
           end
       end
   end

   return closestPlayer
end
while true do
    wait()
spawn(function()
if game.Players.LocalPlayer.Character:FindFirstChild("Humanoid").Health < 80 then
local args = {
   [1] = booga().Humanoid
}

game:GetService("ReplicatedStorage").Framework.Remotes.KnifeHitbox:FireServer(unpack(args))
  end
  end)
   end