How do I loop this animation without anything interrupting it?

Hi and thanks for reading my question, I've been wondering for days on how to make a looping animation that never stops, when I try to do this, It cancels when it fires another animation, and I don't know how to stop it, basically I'm starting off a function where it fires if you have been dealt a certain amount of damage(haven't added that in yet) but what I have so far is clicking on a button, however, when you click on that button the animation plays, but jumping or stop walking just cancels the animation, here's what I have so far.

	local a = Instance.new('Animation')
	a.AnimationId = 'rbxassetid://1171537883'
	local player = game.Players.LocalPlayer
	workspace:WaitForChild(player.Name,3)
	local trackanimation = nil
	local playstance = true
	function playAnimation(AnimationSource)
		if playstance == true then 
			trackanimation = workspace[player.Name].Humanoid:LoadAnimation(a)
				while wait() do
			trackanimation:Play()
			end
		end
	end
script.Parent.MouseButton1Click:connect(playAnimation)

help is extremely appreciated! Thanks.

Try to use pcall, it should help

Here’s what the code should look like

local a = Instance.new('Animation')
a.AnimationId = 'rbxassetid://1171537883'
local player = game.Players.LocalPlayer
workspace:WaitForChild(player.Name,3)
local trackanimation = nil
local playstance = true

function playAnim(source)
pcall(function()
if playstance == true then
trackanimation = workspace[player.Name].Humanoid:LoadAnimation(a)
while wait() do
trackanimation:Play()
end
end
end
end

If that doesn’t work try storing the animation code in a empty script that has no other code in it.