Why does it seem as if my script is not running?

local serverstorage = game:GetService("ServerStorage")
local debris = game:GetService("Debris")
local roundtimer = 60*5
local intermissiontime = 60 --*whatever amount of minutes if any are neededs
local replicatedstorage = game:GetService("ReplicatedStorage")
local event = replicatedstorage:WaitForChild("RemoteEvent")
local maps = serverstorage:WaitForChild("Maps")
local mapholder = game.Workspace:WaitForChild("MapHolder")
local map = mapholder:GetChildren()

while true do

	--wait for contestants
	while true do
		wait(5)
		contestants = {}
		for _, player in pairs(game.Players:GetPlayers()) do
			if player and player.Character then
				local humanoid = player.Character:WaitForChild("Humanoid")
				if humanoid and humanoid.Health > 0 then
					table.insert(contestants, player)
				end
			end
		end
		if #contestants >= 2 then
			print("Enough players detected! Starting game soon.")
			break
		else
			print("Not enough players.")
		end
	end
	
	--load a random map	
	wait(2)
	mapholder:ClearAllChildren()
	wait(2)
	local allmaps = maps:GetChildren()
	local newmap = allmaps[math.random(1,#allmaps)]:clone()
	newmap.Parent = game.Workspace.MapHolder
	wait(2)	
	
	--teleport players
	local spawnsmodel = newmap:WaitForChild("Spawns")
	local spawns = spawnsmodel:GetChildren()
	for _, player in pairs(contestants) do
		if player and player.Character and #spawns > 0 then
			local torso = player.Character:WaitForChild("Torso")
			spawnindex = math.random(1,#spawns)
			local spawn = spawns[math.random(1,#spawns)]
			if spawn and torso then
				table.remove(spawns,spawnindex)
				torso.CFrame = CFrame.new(spawn.Position + Vector3.new(0,3,0))
				local tag = Instance.new("StringValue")
				tag.Name = "tag"
				tag.Parent = player.Character
				
			end
		end
	end
	spawnsmodel:remove()
	
	--wait for round end conditions k?
	--ye sure m8
	--kthx
	--np
	local localtimer = roundtimer
	while localtimer > 0 do
		wait(1)
		localtimer = localtimer-1
		activecontestants = {}
		for _, player in pairs(contestants) do
			if player then
				local character = player.Character
				if character then
					local tag = character:FindFirstChild("tag")
					local humanoid = character:FindFirstChild("Humanoid")
					if tag and humanoid and humanoid.Health > 0 then
						table.insert(activecontestants, player)
					end
				end
				
			end
	end
	
	end
	if #activecontestants <= 1 then
		break
	end
	
	
	wait()
end

This is my entire script. In here, it manages rounds in a game and loads maps. It worked just fine in my baseplate testing environment; however, it doesn't seem to be running at all when I impliment it into my game for testing. It does not show any errors, either.

If you have an answer, please explain your answer so that I understand the problem in the future. Thank you!