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)