How to make CameraScript secure from exploits?

So I am making a shooter-type game where the player's aim is wobbly and thus difficult to aim:

--services

local UserInputService = game:GetService("UserInputService")
local RunService = game:GetService("RunService")
local Players = game:GetService("Players")

--constants

local LOCAL_PLAYER = Players.LocalPlayer
local CAMERA = workspace.CurrentCamera
local CHARACTER = LOCAL_PLAYER.Character or LOCAL_PLAYER.CharacterAdded:Wait()
local HUMANOID = CHARACTER:WaitForChild("Humanoid")
local HUMANOID_ROOT_PART = HUMANOID.RootPart
local CHARACTERS = workspace:WaitForChild("Characters")

--variables

local x = 0
local y = 0

local vx = 0
local vy = 0

local modes = {
    "Default";
    "Inertia"
}

local mode = 1

--functions

--initiate

CAMERA.FieldOfView = 80
CAMERA.CameraType = Enum.CameraType.Custom
CAMERA.CameraSubject = CHARACTER

UserInputService.MouseBehavior = Enum.MouseBehavior.Default

RunService:BindToRenderStep("Camera", Enum.RenderPriority.Last.Value, function(dt)
    CAMERA.Focus = CFrame.new(HUMANOID_ROOT_PART.Position)

    if modes[mode] == "Inertia" then
        if vx < 0 then
            vx = vx + 0.1
        elseif vx > 0 then
            vx = vx - 0.1
        end
        if vy < 0 then
            vy = vy + 0.1
        elseif vy > 0 then
            vy = vy - 0.1
        end

        x = (x - vx * (1/260)) % (math.pi * 2)
        y = math.clamp(y - vy * (1/260), -1.4, 0.5)




    elseif modes[mode] == "Default" then

    end

    local center = HUMANOID_ROOT_PART.Position + Vector3.new(0, 4, 0)
    local cframe = CFrame.new(center) * CFrame.Angles(0, x, 0) * CFrame.Angles(y, 0, 0) * CFrame.new(0, 0, 20)
    local rotation = cframe - cframe.p

    local ray = Ray.new(center, (cframe.p - HUMANOID_ROOT_PART.Position))
    local _, position = workspace:FindPartOnRayWithIgnoreList(ray, {})

    CAMERA.CFrame = CFrame.new(position) * rotation
end)


UserInputService.InputChanged:connect(function(inputObject, processed)
    if not processed then
        if modes[mode] == "Inertia" then
            if vx < 10 and vx > -10 then
                vx = vx + inputObject.Delta.X * 0.05
            end
            if vy < 10 and vy > -10 then
                vy = vy + inputObject.Delta.Y * 0.05
            end
        elseif modes[mode] == "Default" then
            x = (x - inputObject.Delta.X * (1/260)) % (math.pi * 2)
            y = math.clamp(y - inputObject.Delta.Y * (1/260), -1.4, 0.5)    
        end
    end
end)


LOCAL_PLAYER.CharacterAdded:Connect(function(character)
    CHARACTER = LOCAL_PLAYER.Character or LOCAL_PLAYER.CharacterAdded:Wait()
    HUMANOID = CHARACTER:WaitForChild("Humanoid")
    HUMANOID_ROOT_PART = HUMANOID.RootPart
end)

This is the CameraScript. Although it works fine, my problem is that I don't know how to secure it from exploiters; for example, one could change the script so the camera isn't wobbly, giving him or her an advantage.