Why is this sword animation not working in starterPlayer?

local CanAttack = true
script.Parent.Equipped:connect(function()
	local idle = script.Parent.Parent.Humanoid:LoadAnimation(script.Idle)
	local attack = script.Parent.Parent.Humanoid:LoadAnimation(script.Attack)
	
	idle:Play()
end)

script.Parent.Activated:connect(function()
	local idle = script.Parent.Parent.Humanoid:LoadAnimation(script.Idle)
	local attack = script.Parent.Parent.Humanoid:LoadAnimation(script.Attack)
	
	if CanAttack == true then
		attack:Play()
		idle:Stop()
		wait(1)
		attack:Stop()
		idle:Play()
		CanAttack = true
		script.Parent.CanDamage.Value = true
	end
end)

It's most likely because every time you make a new animation, never stopping the original. Try doing something like this:

local CanAttack = true
local i = script:WaitForChild("Idle)
local a = script:WaitForChild("Attack")
local hum = script.Parent.Parent:WaitForChild("Humanoid")
i.Parent = hum
a.Parent = hum
local idle = hum:LoadAnimation(i)
local attack = hum:LoadAnimation(a)
script.Parent.Equipped:connect(function()
	idle:Play()
end)
script.Parent.Activated:connect(function()
if CanAttack == true then
	attack:Play()
	idle:Stop()
	wait(1)
	attack:Stop()
	idle:Play()
	CanAttack = true
	script.Parent.CanDamage.Value = true
	end
end)

Also, another thing to note is that animations MUST be parented to the humanoid to work. This should fix all your problems.

Hope I could help. Have a nice day. -REALTimothy0812