Is there a way to create a jerk effect when shooting a gun on Roblox?

I've tried with so many things, I played around with camera and mouse properties/functions. I still can't figure out how to create that effect and it's crucial for my game. Here's what I done, but nothing. This is in a Local Script, game>StarterScripts>

local Player = game.Players.LocalPlayer
local Camera = workspace.CurrentCamera
local mouse = Player:GetMouse()

function tilt(inputObject)
    if inputObject.KeyCode == Enum.KeyCode.E then
        local JerkUp = CFrame.new(mouse.Hit * Vector3.new(0,0.5,0))
        Camera.Focus = JerkUp
    end
end
game:GetService("UserInputService").InputBegan:connect(tilt)