Sprint System that works on PC, but not Mobile

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Recently I’ve been developing a horror game, and a couple days ago I was making mobile support for a sprint system that already works perfectly fine on PC (the code block listed below is the PC version)

It even works on consoles, but it won’t work on my mobile buttons. I’ve tried making different sprinting systems dedicated just for mobile, I’ve tried modifying this one, but it won’t work.

The goal for this is the mobile player taps and holds the sprint button, and they sprint, when they let go, they stop.

The following screenshots is the layout of my Mobile Buttons, and how they look in game.
image
image

The following code is my sprint system that previously works for PC.


local PlayerStamina_ = {
	BaseWalkSpeed = 10,
	SprintSpeed = 16,
	Stamina = 100,
	MaxStamina = 100,
	CrouchSpeed = 4,
	RechargeTime = 2,
}

RunService.RenderStepped:Connect(function(delta)
	local Stamina = Humanoid:GetAttribute("Stamina")
	if Stamina < StaminaUsage then
		IsSprinting = false
		Humanoid.WalkSpeed = Humanoid:GetAttribute("BaseWalkSpeed")
		TweenService:Create(LowStamina, TweenInfo.new(0.5, Enum.EasingStyle.Quint, Enum.EasingDirection.Out), {ImageTransparency = 0.2}):Play()	
		TweenService:Create(VeinStamina, TweenInfo.new(0.5, Enum.EasingStyle.Quart, Enum.EasingDirection.Out), {ImageTransparency = 0.1}):Play()
		task.wait(2)
		TweenService:Create(LowStamina, TweenInfo.new(5, Enum.EasingStyle.Sine, Enum.EasingDirection.Out), {ImageTransparency = 1}):Play()	
		TweenService:Create(VeinStamina, TweenInfo.new(5, Enum.EasingStyle.Sine, Enum.EasingDirection.Out), {ImageTransparency = 1}):Play()	
	end

	if IsSprinting and Stamina > 0 and Humanoid.MoveDirection.Magnitude > 0 then
		Humanoid:SetAttribute("Stamina", Stamina - StaminaUsage)
		LastSprint = tick()
	else
		if tick() - LastSprint >= RechargeTime and Stamina < Humanoid:GetAttribute("MaxStamina") then
			Humanoid:SetAttribute("Stamina", Stamina + StaminaUsage)	
		end
	end
end)

UserInputService.InputBegan:Connect(function(Input)
	if Input.KeyCode == Enum.KeyCode.LeftShift then
		IsSprinting = true
		Humanoid.WalkSpeed = PlayerStamina_.SprintSpeed
	end
end)

UserInputService.InputEnded:Connect(function(Input)
	if Input.KeyCode == Enum.KeyCode.LeftShift then
		IsSprinting = false		
		Humanoid.WalkSpeed = PlayerStamina_.BaseWalkSpeed
	end
end)

Humanoid:GetAttributeChangedSignal("Stamina"):Connect(function()
	local Stamina = Humanoid:GetAttribute("Stamina")
	StaminaBar.Fill.Fill.Size = UDim2.fromScale(Stamina / 100, 1)
end)

*Note that the system initially ran on ContextActionService but was modified to use UserInputService

How can I fix this? Are there any other better ways to make this work? Thank you for your time.

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