why won't local debounce = false work?

I don't know why, but the debounce on this script wont work. I'm not very good with debounce, so i don't know what's failing. Even though I have the debounce script, this script will play a million times when touched

--Variables
function fade()
    script.Parent.Parent.Enabled = true
    for i = 0, 1, 0.05 do
        script.Parent.TextTransparency = i
        wait(0.05)
    end
    for i = 1, 0, -0.05 do
        script.Parent.TextTransparency = i
        print(i)
        wait(0.05)
    end
    script.Parent.Parent.Enabled = false
    return
end

local debounce = false
--Variables

workspace.Earth.Earth.Touched:connect(function()
    if debounce == false then
        debounce = true
        -- script.Parent.Text = "Earth"
        fade()
    end
end)

workspace.Earth.Earth.TouchEnded:connect(function()
    if debounce == true then
        debounce = false
        script.Parent.Parent.Enabled = false
        wait(1)
        debounce = false
    end
end)

I don't know what's wrong.