Working the streets anti cheat bypass

spawn(function()
local mt = getrawmetatable(game)
setreadonly(mt,false)
local backup
local hook = function(tbl,idx,val)
     if checkcaller() then return backup(tbl,idx,val) end
     if tbl:IsA("Humanoid") and idx == "Health" then
           return
     end
     if tbl.Name == "HumanoidRootPart" and idx == "CFrame"then
           return "notnx"
     end
     if idx == "WalkSpeed" then
           return "notnx"
     end
     if idx == "Sit" then
           pcall(function()
                 local chr = game.Players.LocalPlayer.Character
                 chr:FindFirstChildOfClass("Humanoid").Sit = false
                 chr.HumanoidRootPart.Anchored = false
           end)
           return "notnx"
     end
     return backup(tbl,idx,val)
end
backup = hookfunction(mt.__newindex,hook)
end)
wait(0.1)
spawn(function()
local mt = getrawmetatable(game)
setreadonly(mt,false)
local backup
local hook = function(self,...)
     if checkcaller() then return backup(self,...) end
     local args = {...}
     local method = table.remove(args)
     if method:lower() == "breakjoints" then
           return "notnx"
     end
     if args[1] == "spd" or args[1] == " jumpheiught" or args[1] == " hipheight" or args[1] == "bork" then
           return "notnx"
     end
     return backup(self,...)
end
backup = hookfunction(mt.__namecall,hook)
end)

game:GetService("UserInputService").InputBegan:connect(function(input,gameprocesed)
 if input.KeyCode == Enum.KeyCode.LeftShift then
  for i = 1,16 do
   wait()

   game.Players.LocalPlayer.Character:WaitForChild("Humanoid").WalkSpeed = 200
  end
 end
end)

game:GetService("UserInputService").InputEnded:connect(function(input,gameprocesed)
 if input.KeyCode == Enum.KeyCode.LeftShift then
  for i = 1,16 do
   wait()

   game.Players.LocalPlayer.Character:WaitForChild("Humanoid").WalkSpeed = 16
  end
 end
end)