Why doesn't this script start from the top when a correct answer is given?

For some reason this script won't restart from the top or break when the wrong answer is given. It only ends when time runs out (after 20 seconds).

local p = game:GetService("Players")
local player = p.LocalPlayer
local pg = player.PlayerGui
local gui = pg:WaitForChild("ScreenGui")

local qnum = 1
local qtime = 20

local rs = game:GetService("ReplicatedStorage")
local questions = rs.Questions

local gametime = true


while gametime do
	local questionset = questions:GetChildren()
	local chosenquestion = questionset[math.random(1,#questionset)]
	local a = chosenquestion.A
	local b = chosenquestion.B
	local c = chosenquestion.C
	local d = chosenquestion.D
	local correct = chosenquestion.Correct
	local cg = gui.Frame.CorrectGuess
	
	local boxa = gui.Frame.A
	local boxb = gui.Frame.B
	local boxc = gui.Frame.C
	local boxd = gui.Frame.D
	
	boxa.Visible = true
	boxb.Visible = true
	boxc.Visible = true
	boxd.Visible = true
	gui.Frame.Question.Visible = true
	cg.Visible  = false
	
	gui.Frame.Question.Text = "Question ".. qnum .. ": ".. chosenquestion.Value
	
	boxa.Text = "A) ".. a.Value
	boxb.Text = "B) ".. b.Value
	boxc.Text = "C) ".. c.Value
	boxd.Text = "D) ".. d.Value
	


	boxa.MouseButton1Down:Connect(function()
		if correct.Value == boxa.Name then
			gui.Frame.Question.Visible = false
			boxa.Visible = false
			boxb.Visible = false
			boxc.Visible = false
			boxd.Visible = false
			cg.Visible = true
			cg.Text = "Correct!"
			wait(3)
		else
			gui.Frame.Question.Visible = false
			boxa.Visible = false
			boxb.Visible = false
			boxc.Visible = false
			boxd.Visible = false
			cg.Visible = true
			cg.Text = "Sorry! That's incorrect."
			wait(3)
			gametime = false
		end
	end)
	
	boxb.MouseButton1Down:Connect(function()
		if correct.Value == boxb.Name then
			gui.Frame.Question.Visible = false
			boxa.Visible = false
			boxb.Visible = false
			boxc.Visible = false
			boxd.Visible = false
			cg.Visible = true
			wait(3)
		else
			gui.Frame.Question.Visible = false
			boxa.Visible = false
			boxb.Visible = false
			boxc.Visible = false
			boxd.Visible = false
			cg.Visible = true
			cg.Text = "Sorry! That's incorrect."
			wait(3)
			gametime = false
		end
	end)
	
	boxc.MouseButton1Down:Connect(function()
		if correct.Value == boxc.Name then
			gui.Frame.Question.Visible = false
			boxa.Visible = false
			boxb.Visible = false
			boxc.Visible = false
			boxd.Visible = false
			cg.Visible = true
			wait(3)
		else
			gui.Frame.Question.Visible = false
			boxa.Visible = false
			boxb.Visible = false
			boxc.Visible = false
			boxd.Visible = false
			cg.Visible = true
			cg.Text = "Sorry! That's incorrect."
			wait(3)
			gametime = false
		end
	end)
	
	boxd.MouseButton1Down:Connect(function()
		if correct.Value == boxd.Name then
			gui.Frame.Question.Visible = false
			boxa.Visible = false
			boxb.Visible = false
			boxc.Visible = false
			boxd.Visible = false
			cg.Visible = true
			wait(3)
		else
			gui.Frame.Question.Visible = false
			boxa.Visible = false
			boxb.Visible = false
			boxc.Visible = false
			boxd.Visible = false
			cg.Visible = true
			cg.Text = "Sorry! That's incorrect."
			wait(3)
			gametime = false
		end
	end)
	if gui.Frame.Timer.Time.Value <= 0 then
		gui.Frame.Question.Visible = false
		boxa.Visible = false
		boxb.Visible = false
		boxc.Visible = false
		boxd.Visible = false
		cg.Visible = true
		cg.Text = "Times Up!"
		wait(3)
		break
	end
	wait(20)
end

gui.Frame.Visible = false

I know it's a long script but bare with me. I just want this quiz game to get up and running so I can design better game aspects around it and make it look nice. If anyone knows how to restart a loop if a correct answer is given, your input would be greatly appreciated!