Why isn't the Camera shaking or "Moving" at all?

I want It so when you hold down C the camera shake side to side

but it seem the action will not take place....

may I have some help plz

Lines 22 - 37

local play = game.Players.LocalPlayer

local char = play.Character

local hum = char:WaitForChild("Humanoid")

local uis = game:GetService("UserInputService")

local use = false
local inuse = false

local charge = game.ReplicatedStorage:WaitForChild("Remotes"):WaitForChild("ChargeEvent")
local down = false
   local cam = game.Workspace.CurrentCamera                                      
 uis.InputBegan:Connect(function(input,istyping)
    if not istyping then
    if  input.KeyCode == Enum.KeyCode.C then
        if inuse == false then 
            inuse = true
            down = true
            -------=local chargeanim = hum:LoadAnimation(script.ChargingAnimation) 
                while down == true do wait()

                 if down == false then
                    print("broke(Cam Shake)")
                    break
                    end     
            for i = 1,5 do wait()
                print("shake")
            cam.CFrame = cam.CFrame + Vector3.new(3,0,0)
            end

            for i = 1,5 do wait()
                print("InverseShake")
            cam.CFrame = cam.CFrame - Vector3.new(3,0,0)
            end
                end
        end
    end
    end
    end)
        ----=---------------=end

        --- chargeanim:Play()



        uis.InputEnded:Connect(function(input,istyping)
    if not istyping then
    if  input.KeyCode == Enum.KeyCode.C then
        if inuse == true then   
        inuse = false
        down = false    
            ---charge:FireServer(inuse)
            print("upFromShake")
            -------=chargeanim:Stop() 











            end

    end 
    end
        end)

when the Key is Up it breaks the loop...…….