InputBegan and InputEnded buggy? Looking for another method or fix

new desc the ball just nonstop grows input ended doesnt even start ???

old desc I'm making a script that charges a beam when a button is pressed and held and then fired once the button is let go with filtering enabled and remote events. The script works but the InputBegan and InputEnded is super buggy and I now i need help with either fixing this or finding a new way to execute the script

sorry its kinda rushed

local script in startercharacterscripts (fires the event)

local uis = game:GetService("UserInputService")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local plr = game.Players.LocalPlayer
local char = plr.Character
local urFolder = ReplicatedStorage:WaitForChild(plr.Name)
local isKameCharging = urFolder:WaitForChild("IsKameCharging")
local kamehamehaEvent = ReplicatedStorage.Events:WaitForChild("KamehamehaEvent")
local SSJscript = script.Parent:WaitForChild("SSJ")
local isBeamFired = urFolder:WaitForChild("IsBeamFired")

local debounce = false
local cooldown = 6

local function kameFiring()
	if isKameCharging.Value == false and isBeamFired.Value == false then
	kamehamehaEvent:FireServer()
	end
end
	   
uis.InputBegan:connect(function(input, inputProcessed)
	if debounce == false then debounce = true
	if inputProcessed == false and input.KeyCode == Enum.KeyCode.Z then
		print("hi")
		kameFiring()
		wait(cooldown)	
		return
	end
 debounce = false
	end
end)

script that receives the event (serverscriptservice)

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local kamehamehaEvent = Instance.new("RemoteEvent", ReplicatedStorage.Events)
kamehamehaEvent.Name = "KamehamehaEvent"

local uis = game:GetService("UserInputService")

ready = true

local function onKameCharged(plr)
	print("mmm")
	local char = plr.Character
	local urFolder = ReplicatedStorage:WaitForChild(plr.Name)
	local isKameCharging = urFolder:WaitForChild("IsKameCharging")
	local SSJscript = char:WaitForChild("SSJ")
	local isBeamFired = urFolder:WaitForChild("IsBeamFired")
	local humanoid = char:WaitForChild("Humanoid")
	if isKameCharging.Value == false and isBeamFired.Value == false and ready then
	isKameCharging.Value = true
	print("z pressed, kamehameha isnt charging nor firing")
	SSJscript.Disabled = true
	humanoid.WalkSpeed = 0
	humanoid.JumpPower = 0
	local anim = Instance.new("Animation")
	anim.AnimationId = "http://roblox.com/asset/?id=1274860761"
	local animTrack = humanoid:LoadAnimation(anim)
	animTrack:Play()
	ready = false
	wait(.6)
	local chargePart = Instance.new("Part")
 	chargePart.Parent = char
    chargePart.Anchored = true
    chargePart.CanCollide = false
    chargePart.Transparency = 0
    chargePart.formFactor = "Symmetric"
    chargePart.Size = Vector3.new(1.25, 1.25, 1.25)
    chargePart.TopSurface = "Smooth"
    chargePart.BottomSurface = "Smooth"
    chargePart.Name = "KamehamehaBall"
    chargePart.Shape = "Ball"
	chargePart.Material = "Neon"
	chargePart.CFrame = char.RightHand.CFrame + Vector3.new(-0.6,0,0)
    chargePart.BrickColor = BrickColor.new("Cyan")
	local outlineCharge = Instance.new("Part")
	outlineCharge.Parent = char
	outlineCharge.Anchored = true
	outlineCharge.CanCollide = false
	outlineCharge.Transparency = 0.9
	outlineCharge.formFactor = "Symmetric"
	outlineCharge.Size = Vector3.new(1.75, 1.75, 1.75)
	outlineCharge.TopSurface = "Smooth"
	outlineCharge.BottomSurface = "Smooth"
	outlineCharge.Name = "KamehamehaBallOutline"
	outlineCharge.Shape = "Ball"
	outlineCharge.Material = "Neon"
	outlineCharge.CFrame = chargePart.CFrame
	outlineCharge.BrickColor = BrickColor.new(248,248,248)
	script.plrName.Value = plr.Name
	script.Script.Disabled = false
	ready = true
	local debounce = false
	local cooldown = 5
	uis.InputEnded:connect(function(input, inputProcessed)
		if debounce then debounce = true 
		if inputProcessed == false and input.KeyCode == Enum.KeyCode.Z then
		isKameCharging.Value = false
		isBeamFired.Value = true
		animTrack:Stop()
		local fireanim = Instance.new("Animation")
		fireanim.AnimationId = "rbxassetid://1243133546"
		local fireTrack = humanoid:LoadAnimation(fireanim)
		fireTrack:Play()
		chargePart.Transparency = 1
		outlineCharge.Transparency = 1
		wait(.2)
		outlineCharge.Transparency = .9
		chargePart.Transparency = 0
		chargePart.CFrame = char.RightHand.CFrame + Vector3.new(0.6,0,.2)
--		outlineCharge.Parent = chargePart
		outlineCharge.CFrame = chargePart.CFrame
		wait(.2)
		chargePart:Destroy()
		outlineCharge:Destroy()
		humanoid.WalkSpeed = 16
		fireTrack:Stop()
		humanoid.JumpPower = 50
		local kame = char:WaitForChild("Kamehameha")
		kame.Disabled = false
		isBeamFired.Value = false
		wait(cooldown)		
		end
		debounce = false
		end
end)	
end
end
kamehamehaEvent.OnServerEvent:connect(onKameCharged)

Your script is buggy, mainly because you forgot a few important essentials when creating a userinputservice function.

1. You forgot to add a debounce, that may recharge.
2. You forgot to check if the input was processed.

Here's an example of a correct, and not buggy userinputservice function;

local uis= game:GetService("UserInputService")
local debounce = false
local cooldown= 5

uis.InputBegan:Connect(function(input, inputProcessed)
	if debounce == false then debounce = true
		if inputProcessed == false and input.KeyCode == Enum.KeyCode.E then
			print("Cheese")
			wait(cooldown)
		end
	debounce = false
	end
end)