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.

This is my theory.

Make a script that detects if your "CameraScript " has changed. If it has, it kicks the player off the game.