Can i optimize my script

Help and Feedback Code Review
#1 
function UIController:OpenUI(Name)
	local ui = PlayerGui.Main:FindFirstChild(Name)
	print(ui)
	if not ui then warn("FAILED TO OPEN / CLOSE UI") return end
	
	isProcess = true
	
	if canOpen and isCompleted then
		print("a")
		canOpen = false
		isCompleted = false
		local FinalPosition = UDim2.fromScale(0.5,0.5)
		local FinalSize = UIController.OriginalSizes.GUIS[Name]
		local tweenPos = TweenService:Create(ui.Canvas, TweenInfo.new(0.4), {Position = FinalPosition})
		local tweenSize = TweenService:Create(ui.Canvas, TweenInfo.new(0.4), {Size = FinalSize})
		
		ui.Enabled = true
		
		tweenPos:Play()
		tweenSize:Play()
		
		SoundController:PlaySound("FrameOpen",1)
		
		tweenPos.Completed:Wait()
		
		isCompleted = true
	elseif isCompleted then
		canOpen = true
		isCompleted = false
		local FinalPosition = UDim2.fromScale(0.5,0.65)
		local FinalSize = UDim2.fromScale(0,0)
		local tweenPos = TweenService:Create(ui.Canvas, TweenInfo.new(0.4), {Position = FinalPosition})
		local tweenSize = TweenService:Create(ui.Canvas, TweenInfo.new(0.4), {Size = FinalSize})

		tweenPos:Play()
		tweenSize:Play()

		SoundController:PlaySound("FrameOpen",1)

		tweenPos.Completed:Wait()
		ui.Enabled = false
	end
	
	isProcess = false
end
#2 
local function setUi(ui, open: boolean, fieldOfView, finalPosition, finalSize)
	canOpen = not open
	isCompleted = false
	local tweenPos = TweenService:Create(ui.Canvas, TweenInfo.new(0.25), {Position = finalPosition})
	local tweenSize = TweenService:Create(ui.Canvas, TweenInfo.new(0.25), {Size = finalSize})
	local newField = TweenService:Create(game.Workspace.CurrentCamera, TweenInfos.Blur, {FieldOfView = fieldOfView})

	if open then
		ui.Enabled = true
	end

	tweenPos:Play()
	tweenSize:Play()
	newField:Play()

	SoundController:PlaySound("FrameOpen",1)

	tweenPos.Completed:Wait()
	
	if not open then
		ui.Enabled = false
	end

	isCompleted = true
end
local function openUI(Name)
	local ui = PlayerGui.Main:FindFirstChild(Name)
	print(ui)
	if not ui then warn("FAILED TO OPEN / CLOSE UI") return end
	
	isProcess = true
	
	if canOpen and isCompleted then
		local FinalPosition = UDim2.fromScale(0.5,0.5)
		local FinalSize = UIController.OriginalSizes.GUIS[Name]
		setUi(ui, true, 90, FinalPosition, FinalSize)
	elseif isCompleted then
		canOpen = true
		isCompleted = false
		local FinalPosition = UDim2.fromScale(0.5,0.65)
		local FinalSize = UDim2.fromScale(0,0)
		setUi(ui, false, 70, FinalPosition, FinalSize)
	end
	
	isProcess = false
end
#3

Also use workspace instead of game.Workspace.