Having multiple Local errors on this localscript?[Read script for more info]

This script errors are a bit complex.. Part of this doesn't work at all, part of it only studio and not normal game, and part of it works both. I want all of them to work at least just in normal game.

-- Script is Local Script --
local plr = game.Players.LocalPlayer
local house = plr.PlayerGui.GameChooseGUI.Frame
local t = plr.PlayerGui.GameChooseGUI.Frame.PlayButton.Text
debounce = false
-- This below only works on studio --
script.Parent.Text = "LOADING."
wait(1)
script.Parent.Text = "LOADING.."
wait(1)
script.Parent.Text = "LOADING..."
wait(1)
script.Parent.Text = "LOADING."
wait(1)
script.Parent.Text = "LOADING.."
wait(1)
script.Parent.Text = "LOADING..."
wait(1)
script.Parent.Text = "LOADING."
wait(1)
script.Parent.Text = "LOADING.."
wait(1)
script.Parent.Text = "LOADING..."
wait(1)
script.Parent.Text = "PLAY NOW"
-- This below is the only one that works on studio AND on game --
script.Parent.MouseButton1Click:Connect(function()
	plr.PlayerGui.GameChooseGUI.Frame.Visible = false
	plr.TeamColor = BrickColor.new("Bright red")
	debounce = true
end)
-- This below down't work both on studio or on game --
-- What this mess is below is I'm trying to make it so that the GUI only appears once so if the player dies it won't come again.

if debounce == true then
	while wait() do
		if house.Visible == true then
			house.Visible = false
		end
	end
end

Don't really know why you'd want to implement a loading screen like that. Also you need to wait for the gui and it's children load with :WaitForChild().

script.Parent.MouseButton1Click:Connect(function()
    plr.PlayerGui.GameChooseGUI.Frame.Visible = false
    plr.TeamColor = BrickColor.new("Bright red")
    debounce = true
end)

while wait() do
	if house.Visible and debounce then
		house.Visible = false
	end
end

If that doesn't work then check if another script has overwritten the event.