How to Fix This Path Finding Script To Follow The Nearest Player?

I want to make it so that this NPC follows the nearest player. But the script doesn't work. It's supposed to follow the nearest player but instead it follows the first player to join. How would I fix this? Please help.

Thank you!

(Path finding script)

debugMode = false
targetNPCs = false

	h = script.Parent.Parent:WaitForChild("Humanoid")
	pathService = game:GetService("PathfindingService")
	targetV = script.Parent:WaitForChild("Target")

	function closestTargetAndPath()
		local humanoids = {}
		if targetNPCs then
			local function recurse(o)
				for _,obj in pairs(o:GetChildren()) do
					if obj:IsA("Model") then
						if obj:findFirstChild("Humanoid") and obj:findFirstChild("Torso") and obj.Humanoid ~= h and obj.Humanoid.Health > 0 and not obj:findFirstChild("ForceField") then
							table.insert(humanoids,obj.Humanoid)
						end
					end
					recurse(obj)
				end
			end
			recurse(workspace)
		else
			for _,v in pairs(game.Players:GetPlayers()) do
				if v.Character and v.Character:findFirstChild("HumanoidRootPart") and v.Character:findFirstChild("Humanoid") and v.Character.Humanoid.Health > 0 and not v:findFirstChild("ForceField") then
					table.insert(humanoids,v.Character.Humanoid)
				end
			end
		end
		local closest,path,dist
		for _,humanoid in pairs(humanoids) do
			local myPath = pathService:ComputeRawPathAsync(h.Torso.Position,humanoid.Torso.Position,500)
			if myPath.Status ~= Enum.PathStatus.FailFinishNotEmpty then
				-- Now that we have a successful path, we need to figure out how far we need to actually travel to reach this point.
				local myDist = 0
				local previous = h.Torso.Position
				for _,point in pairs(myPath:GetPointCoordinates()) do
					myDist = myDist + (point-previous).magnitude
					previous = point
				end
				if not dist or myDist < dist then -- if true, this is the closest path so far.
					closest = humanoid
					path = myPath
					dist = myDist
				end
			end
		end
		return closest,path
	end

	function goToPos(loc)
		h:MoveTo(loc)
		local distance = (loc-h.Torso.Position).magnitude
		local start = tick()
		while distance > 4 do
			if tick()-start > distance/h.WalkSpeed then -- Something may have gone wrong. Just break.
				break
			end
			distance = (loc-h.Torso.Position).magnitude
			wait()
		end
	end

	while wait() do
		local target,path = closestTargetAndPath()
		local didBreak = false
		local targetStart
		if target and h.Torso then
			targetV.Value = target
			targetStart = target.Torso.Position
			roaming = false
			local previous = h.Torso.Position
			local points = path:GetPointCoordinates()
			local s = #points > 1 and 2 or 1
			for i = s,#points do
				local point = points[i]
				if didBreak then 
					break
				end
				if target and target.Torso and target.Health > 0 then
					if (target.Torso.Position-targetStart).magnitude < 1.5 then
						local pos = previous:lerp(point,.5)
						local moveDir = ((pos - h.Torso.Position).unit * 2)
						goToPos(previous:lerp(point,.5))
						previous = point
					end
				else
					didBreak = true
					break
				end
			end
		else
			targetV.Value = nil
		end
		if not didBreak and targetStart then
				goToPos(targetStart)
		end
	end
end