Humanoid.Running Script Isn't Working Correctly? [SOLVED]

[SOLVED BY MYSELF]

I want this script to detect when a player is moving, and give speed if they are. It was working at one point, and still is, just not all the time.

What I mean by this, is if my speed suddenly changes, it'll detect me moving, but if I'm moving at a relatively constant speed, it doesn't.

I've tried a lot of different things, and nothing is working. Here is the code, any help is appreciated.

game.Players.PlayerAdded:Connect(function(player)
    player:WaitForChild("leaderstats"):WaitForChild("Cardio")

    local Debounce = false

    local Speed = player.Speed
    local TotalSpeed = player.TotalSpeed
    local Cardio = player.leaderstats.Cardio
    local TotalCardio = player.TotalCardio
    local SpeedMulti = player.SpeedMulti


    local Char = game.Workspace:WaitForChild(player.Name)

    while true do
        Char.Humanoid.Running:Connect(function(speed)
            if Debounce == false and speed > 0 then
                print(speed)
                Debounce = true
                Speed.Value = Speed.Value + 1 * SpeedMulti.Value
                TotalSpeed.Value = TotalSpeed.Value + 1 * SpeedMulti.Value
                Cardio.Value = Cardio.Value + 1 * SpeedMulti.Value
                TotalCardio.Value = TotalCardio.Value + 1 * SpeedMulti.Value
            end
        end)

        wait(1)
        Debounce = false
    end
end)

Edit: The print(speed) also doesn't print.