How do I fix my animation script - it is broken and I'm unsure of what to do?

Basically my tool is a wand. Whenever wand is held, animations are played through this script.

--Idle--
local player = game.Players.LocalPlayer
local equipped = false

repeat wait(1) until player.Character

local character = player.Character
local humanoid = character:WaitForChild("Humanoid")

local animation = Instance.new("Animation")
animation.Name = "Idle"
animation.Parent = script.Parent

local animation2 = Instance.new("Animation")
animation2.Name = "Moving"
animation2.Parent = script.Parent

animation.AnimationId = "http://www.roblox.com/asset/?id=" .. "6096006842"-- id
animation2.AnimationId = "http://www.roblox.com/asset/?id=" .. "6123318013"-- id

local animtrack = humanoid:LoadAnimation(animation)
local movinganimtrack = humanoid:LoadAnimation(animation2)

script.Parent.Equipped:Connect(function()
	equipped = true
end)

script.Parent.Unequipped:Connect(function()
	equipped = true
end)

while true do
	wait()
	while equipped == true do
		wait()
		if game.Players.LocalPlayer.Character.UpperTorso.Velocity == 0 then
			movinganimtrack:Stop()
			animtrack:Play()
		else
			animtrack:Stop()
			movinganimtrack:Play()
		end
	end
end

When the wand is equipped, if you're not moving, then the first animation (animtrack) plays. If you are moving while the wand is equipped, then the second animation (movinganimtrack) plays. However, I'm getting multiple bugs. Currently the bug I'm getting is it'll set off randomly when I'm holding the wand even if I don't move. On the other hand, when I use the humanoid.Running function, it works but when I unequip the wand it doesn't stop the animation and it breaks. Any help please? Thanks.

Try messing with animation priority, https://developer.roblox.com/en-us/api-reference/enum/AnimationPriority

And also you can stop all the running animations when you unequip

Tool.Unequipped:connect(function()
	local c = Player.Character.Humanoid:GetPlayingAnimationTracks()
	for i, v in ipairs(c) do
		if v.Name == "Reload" or v.Name == "Idle" then -- Find animationtracks by name, set them to whatever animationtracks you want to stop
			v:Stop()
		end
	end
end)