I need help with, walking script error

I want to, walk ingame like a realistic walk, I am working on the Jojo game but, On the map, I cannot walk, when I try to test the game, I am just getting frozen. I tried re-making animations, script (I put them everywhere, after putting Them in the correct place and not working.) I haven’t looked, In the developer hub because, I think Roblox awesome developers will help me, In this forum.

qalbiwa

Script that I used.
local larm = script.Parent:FindFirstChild("Left Arm")
local rarm = script.Parent:FindFirstChild("Right Arm")

function findNearestTorso(pos)
	local list = game.Workspace:children()
	local torso = nil
	local dist = 1500
	local temp = nil
	local human = nil
	local temp2 = nil
	for x = 1, #list do
		temp2 = list[x]
		if (temp2.className == "Model") and (temp2 ~= script.Parent) then
			temp = temp2:findFirstChild("Torso")
			human = temp2:findFirstChild("Humanoid")
			if (temp ~= nil) and (human ~= nil) and (human.Health > 0) then
				if (temp.Position - pos).magnitude < dist then
					torso = temp
					dist = (temp.Position - pos).magnitude
				end
			end
		end
	end
	return torso
end




while true do
	wait(math.random(1,5))
	local target = findNearestTorso(script.Parent.Torso.Position)
	if target ~= nil then
		script.Parent.Zombie:MoveTo(target.Position, target)
	end

	script.Parent.Humanoid:MoveTo(Vector3.new(math.random(-100,100),0,math.random(-100,100)), game.Workspace.Base)
	

end