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!