My laser projectile script doesn't work why? [BodyVelocity & Touched]

It deals damage until the player finally dies. Then the projectile just freezes in the air. Heres the script maybe you can test it and find out it's problem :(

repeat wait() until game.Players.LocalPlayer.Character

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local camera = game.Workspace.CurrentCamera
local speed = 100

enabled = false

function shootBeam(key)
    if key.KeyCode == Enum.KeyCode.F and enabled == false then
        enabled = true
        print("pew pew!")

local laser = Instance.new("Part", workspace)
        laser.Name = "laserBeam"
        laser.Anchored = false
        laser.CanCollide = false
        laser.Transparency = 0
        laser.FormFactor = Enum.FormFactor.Custom
        laser.Material = Enum.Material.Neon
        laser.BrickColor = BrickColor.new("Lime green")
        laser.Size = Vector3.new(0.5, 0.5, 2)
        laser.CFrame = player.Character.Torso.CFrame *CFrame.new(0, 1.5, -2.5)

        local bodyvelocity = Instance.new("BodyVelocity", laser)
        bodyvelocity.velocity = player.Character.Torso.CFrame.lookVector * speed

        local debounce = false

        laser.Touched:connect(function(hit)
            if hit.Parent:FindFirstChild("Humanoid") ~= nil and debounce == false then
                debounce = true
                hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Health - 15
                wait(2)
                debounce = false
            end
        end)

        game:GetService("Debris"):AddItem(laser, 2)
        wait(1)
        enabled = false
    end
end

game:GetService("UserInputService").InputBegan:connect(shootBeam)