Mouse Input still gets detect even if tool is not equipped

Help and Feedback Scripting Support
4

The Tool.Equipped event, has a parameter which is the mouse. You can pass in the mouse through that parameter, and connect it with your Mouse.Button1Down and Mouse.Button1Up Events.

tool.Equipped:Connect(function(mouse)
    -- Connect mouse with your events
end)

Also, Humanoid:LoadAnimation is deprecated, so you should be using Animator:LoadAnimation instead. An example of how you would use it here is:

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local Humanoid = character:WaitForChild("Humanoid")

if Humanoid then 
	local Animator = Humanoid:FindFirstChildOfClass("Animator")  -- Get the Animator
	if Animator then
		track = Animator:LoadAnimation(HoldAnim) -- Load the animation
		track2 = Animator:LoadAnimation(ShootAnim)
	end
end