Problem with context action service

Help and Feedback Scripting Support
#1

Hello, I have a button for mobile players that allow them to sprint. However, when I test on a mobile gadget, in real life, when I hold the sprint button sometimes my sprint arbitrarily regenerates in a random stamina value even though I’m holding the button down, I know I’m holding it down because when I let go I can see the button darken, as the button brightens when I’m holding it. When I test this in studio with a mobile emulation, like a iPhone, this problem does not occur. This is my script:

local ContextActionService = game:GetService"ContextActionService"
local player = game.Players.LocalPlayer
local tweenService = game:GetService("TweenService")

local stamina = 90.7
local canRun = false
local running = false
local canSprint = true
local canRegen = true

math.clamp(stamina, 0, 100)

local tweenInfo = TweenInfo.new(
	1,
	Enum.EasingStyle.Linear			
)

function buttonPressed(name, state, input)
	local char = player.Character
	local bar = player.PlayerGui:WaitForChild("sprintGui").background.Frame
	if state == Enum.UserInputState.Begin and canSprint == true and game.ReplicatedStorage.values.round.Value == true and not char.HumanoidRootPart:FindFirstChild("iAmBen") then
		game.Workspace.soundEffects.breathingSound:Stop()
		char.Humanoid.WalkSpeed = 24
		canRun = true
		running = true
		while stamina >= 0 and running == true do
			stamina -= .1
			if stamina <= 75 and stamina > 50 then
				canSprint = true
				stamina -= .05
				local Goal = {BackgroundColor3 = Color3.fromRGB(144, 156, 36)}
				tweenService:Create(bar, tweenInfo, Goal):Play()
			end
			if stamina <= 50 and stamina > 25 then
				canSprint = false
				stamina -= .1
				local Goal = {BackgroundColor3 = Color3.fromRGB(161, 99, 33)}
				tweenService:Create(bar, tweenInfo, Goal):Play()
			end
			if stamina <= 25 then
				canSprint = false
				stamina -= .15
				local Goal = {BackgroundColor3 = Color3.fromRGB(168, 0, 24)}
				tweenService:Create(bar, tweenInfo, Goal):Play()
			end
			bar:TweenSize(UDim2.new(stamina / 100, 0, 0.7 ,0), "Out", "Linear", 0)
			task.wait()
			if stamina <= 0 then
				char.Humanoid.WalkSpeed = 16
			end
		end
	else
		if game.ReplicatedStorage.values.round.Value == true and not char.HumanoidRootPart:FindFirstChild("iAmBen") then
			running = false
			char.Humanoid.WalkSpeed = 16
			if stamina <= 25 then
				game.Workspace.soundEffects.breathingSound:Play()
			end
			if canRegen == true then
				while stamina < 90.7 and not running do
					stamina += .05
					canRegen = false
					if stamina >= 75 then
						canSprint = true
						game.Workspace.soundEffects.breathingSound:Stop()
						local Goal = {BackgroundColor3 = Color3.fromRGB(0, 160, 0)}
						tweenService:Create(bar, tweenInfo, Goal):Play()
					end
					if stamina <= 75 and stamina > 50 then
						canSprint = true
						game.Workspace.soundEffects.breathingSound:Stop()
						local Goal = {BackgroundColor3 = Color3.fromRGB(144, 156, 36)}
						tweenService:Create(bar, tweenInfo, Goal):Play()
					end
					if stamina <= 50 and stamina > 25 then
						game.Workspace.soundEffects.breathingSound:Stop()
						canSprint = false
						local Goal = {BackgroundColor3 = Color3.fromRGB(161, 99, 33)}
						tweenService:Create(bar, tweenInfo, Goal):Play()
					end
					if stamina <= 25 then
						canSprint = false
						local Goal = {BackgroundColor3 = Color3.fromRGB(168, 0, 24)}
						tweenService:Create(bar, tweenInfo, Goal):Play()
					end
					bar:TweenSize(UDim2.new(stamina / 100, 0, 0.7 ,0), "Out", "Linear", 0)
					task.wait()
					if stamina == 0 then
						char.Humanoid.WalkSpeed = 16
					end
				end 
			end
			canRegen = true
		end
	end
	return Enum.ContextActionResult.Pass
end

game.ReplicatedStorage.values.round.Changed:Connect(function()
	local char = player.Character
	local sprintButton = ContextActionService:BindAction("sprintButton", buttonPressed, true)
	ContextActionService:SetPosition("sprintButton",UDim2.new(0,0,500,0))
	ContextActionService:SetTitle("sprintButton","Sprint")
	if game.ReplicatedStorage.values.round.Value == true and not char.HumanoidRootPart:FindFirstChild("iAmBen") then
		task.wait(9.5)
		local char = player.Character
		if not char.HumanoidRootPart:FindFirstChild("iAmBen") then
			ContextActionService:SetPosition("sprintButton",UDim2.new(0.72,-20,0.20,-20))
			ContextActionService:SetTitle("sprintButton","Sprint")
		end
	end
	if game.ReplicatedStorage.values.round.Value == false then
		ContextActionService:UnbindAction("sprintButton")
		ContextActionService:SetPosition("sprintButton",UDim2.new(0,0,500,0))
		ContextActionService:SetTitle("sprintButton","Sprint")
	end
end)

I have no clue what the issue is and how to solve it, I tried putting prints for each stamina segment (by segment I mean the if statements comparing the stamina value), but then I found out that the regeneration was arbitrary, it regenerates in different stamina values, it doesn’t matter what segment its in.

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