How to efficiently fade out a ScreenGui without accessing direct elements?

Hi all, I was wondering a method to effectively fade out a ScreenGui and destroy it completely without accessing each item individually. This includes elements such as TextLabels, ImageLabels, Frames, etc. Here is my current code:

local function FadeGui(ScreenGui)
	spawn(function()
		local Transparency = 0
		
		for i = 0, 1, 0.01 do
			Transparency = i

			ScreenGui.Backdrop.ImageTransparency = Transparency
			ScreenGui.Backdrop.CloseButton.ImageTransparency = Transparency
			
			ScreenGui.LoadingFrame.DescriptionFrame.BackgroundTransparency = Transparency
			ScreenGui.LoadingFrame.DescriptionFrame.GameDescriptionFrame.CreatorLabel.TextTransparency = Transparency
			ScreenGui.LoadingFrame.DescriptionFrame.GameDescriptionFrame.GameLabel.TextTransparency = Transparency
			
			ScreenGui.LoadingFrame.ThumbnailFrame.BackgroundTransparency = Transparency
			ScreenGui.LoadingFrame.ThumbnailFrame.Thumbnail.ImageTransparency = Transparency
			
			wait(0.1)
		end
	end)
end

FadeOut(script.Parent)

Any help would be greatly appreciated, thanks!

You cannot fade a ScreenGUI itself as there is a lack of properties, but if you put all of the contents inside of a frame; which could be a holder frame that scales the whole screen, you can just fade that out and it would work fine and give you the result that you are (hopefully) looking for.

Use TweenService for fading and iterate through all descendants. spawn is not needed when using TweenService.

local TweenService = game:GetService("TweenService")
local Style = TweenInfo.new(10,Enum.EasingStyle.Linear) --10 seconds

local function FadeGui(ScreenGui)

	for _, element in pairs(ScreenGui:GetDescendants())  do
		
			if element:IsA("ImageLabel") then
				local tween = TweenService:Create(element,Style,{ImageTransparency = 1, BackgroundTransparency = 1})
				tween:Play()
			end
			if element:IsA("ImageButton") then
				local tween = TweenService:Create(element,Style,{ImageTransparency = 1, BackgroundTransparency = 1})
				tween:Play()
			end
			if element:IsA("TextLabel") then
				local tween = TweenService:Create(element,Style,{BackgroundTransparency = 1, TextTransparency = 1})
				tween:Play()
			end
			--add more lines if you need to.
		--add more lines if you need to.
	end

end

FadeOut(script.Parent)

Edit: Changed FindFirstChild that would not work, to :IsA.