NPC Follow system works but after death it stops working [?]

#Goal:# My goal is to create an NPC follow system (I already have the damage system completed). What it should do it if you are within a certain range measured by magnitude you are chased by some NPC's that are within range.

#Problem:# The problem is when a Player first spawns in the NPC chases the player and everything but when the player Dies by something (NPC, another player) the NPC's stop chasing the player. The code works but it stops working sometimes.

#Script:# Note that this is a ServerScript in ServerScriptService

local RunService = game:GetService("RunService")
local Settings = require(game:GetService("ReplicatedStorage").ModuleScripts.SETTINGS)
local Respawn_Time = Settings.BANDIT.RESPAWN_TIME
local plrServ = game:GetService('Players')
local NPCBackup = game:GetService('ServerStorage').NPCBackup.Bandit

local function getClosestPlayer(myPos)
	local pos, tor = Settings.BANDIT.RANGE
	for _, plr in pairs(plrServ:GetPlayers()) do
		if plr.Character then
			if (plr.Character.PrimaryPart.Position - myPos).Magnitude < pos then
				pos = (plr.Character.PrimaryPart.Position - myPos).Magnitude
				tor = plr.Character.PrimaryPart
			end
		end
	end
	return tor
end

local function setupNPC(Bandit, BanditPosition)
	
	local hum = Bandit.Humanoid
	local npcPrimaryPart = Bandit.PrimaryPart
	local targetTorso
	spawn(function() 
		while wait(1) do
			targetTorso = getClosestPlayer(npcPrimaryPart.Position)
			if targetTorso then
				hum:MoveTo(targetTorso.Position, targetTorso)
			else
				return
			end
		end
	end)

	hum.Died:Connect(function()
		wait(Settings.BANDIT.RESPAWN_TIME)
		local cln = NPCBackup:Clone()
		cln:SetPrimaryPartCFrame(BanditPosition)
		cln.Parent = workspace.Bandits
		Bandit:Destroy()
		setupNPC(cln, BanditPosition)
		if not cln:FindFirstChild('RobloxAnimation') then
			local Animation = game:GetService('ServerStorage').Effects.RobloxAnimation:Clone()
			Animation.Disabled = false
			Animation.Parent = cln
			cln.Humanoid.WalkSpeed = Settings.BANDIT.WALKSPEED
		end
	end)
end

for _, Bandit in pairs(workspace.Bandits:GetChildren()) do
	spawn(function() setupNPC(Bandit, Bandit.PrimaryPart.CFrame) end)
end

Hopefully, this problem gets solved, I appreciate any feedback that fixes this issue or improves the code. I try avoiding loops and RunService mostly because I do not know when is the correct time to use a while true do loop and I know that using a loop incorrectly can be studio crashing and game breaking. Thank you for reading.

Use this:

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 = 10
	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(0.1)
	local target = findNearestTorso(script.Parent.Torso.Position)
	if target ~= nil then
		script.Parent.Enemy:MoveTo(target.Position, target)
	end
end