Round System Problems? - @TheDeadlyPanther or anyone else.

So earlier I asked a question about my round system code saying that it isn't functional. Later on I got at least 2 responses about it, but it's still not working.

I was wondering if someone could check my code and see if there is a way to fix it. Thank you if you do! (If you can, please also show me a where I fix the code in Lua.)

function playerNotification(Text)
    for _,v in pairs (game.Players:GetChildren()) do
        local textLabel = v.PlayerGui:FindFirstChild("ScreenGui")
        if textLabel then
            textLabel.Frame.TextLabel.Text = Text
        end
    end
end

function waitForPlayers()
    while game.Players.NumPlayers < 2 do
        playerNotification("You need 1 more player to start the game.")
    end
end

function intermissionTimer()
    if game.Players.NumPlayers > 2 then
    for countDown = 10, 1, -1 do
        playerNotification("Intermission: " ..countDown)    
    end
end

function displayGamemode()

end

function mapSelection()
    local mapList = game.ReplicatedStorage.Maps:GetChildren()
    local randomMap = math.random(1, #mapList)
    playerNotification("Choosing the map!")
    wait(4)
    local mapChosen = mapList[randomMap]
    playerNotification("The map is: " ..mapChosen.Name)
    local mapClone = mapChosen:Clone()
    mapClone.Parent = game.Workspace
end

function teleportAllPlayers()
    local target = CFrame.new(workspace.SpawnLocation.Position)
    for i, player in ipairs(game.Players:GetChildren()) do
        player.Character.Torso.CFrame = target + Vector3.new(0, i * 5, 0)
        player.Playing.Value = 1
    end
end

function startingTimer()
    for countDown = 3, 1, -1 do
        playerNotification("Game begins in: " ..countDown)
    end
end

function roundTimer()
    for countDown = 20, 1, -1 do
        playerNotification("Time left: " ..countDown)
    end
end

function roundEnded()

end

function teleportAlivePlayers()
    local target = CFrame.new(workspace.TeleportTarget.Position)
    for i, player in ipairs(game.Players:GetChildren()) do
        player.Character.Torso.CFrame = target + Vector3.new(0, i * 5, 0)
        player.Playing.Value = 0
    end
end

function mapDestroy()

end

function showResults()

end

game:GetService('Players').PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(character)
        character:WaitForChild("Humanoid").Died:connect(function()
            player.Playing.Value = 0
        end)
    end)

    local playing = Instance.new("IntValue", player)
    playing.Value = 0
    playing.Name = "Playing"
end)

while(true) do
      waitForPlayers()
      wait(0)
      intermissionTimer()
      wait(0)
      displayGamemode()
      wait(5)
      mapSelection()
      wait(5)
      teleportAllPlayers()
      wait(0)
      startingTimer()
      wait(0)
      roundTimer()
      wait(0)
      roundEnded()
      wait(0)
      teleportAlivePlayers()
      wait(0)
      mapDestroy()
      wait(0)
      showResults() 
   end
end