Can't play animations on a players humanoid?

Playing animations has become an absolute nightmare now. Every time I try to create, load and play an animation on any local script, the animation doesn't run. Furthermore, when I use a script in the developer.roblox.com website it still doesn't work, but when I use the print function to test to see what is happening it shows that the animation has apparently played or something similar

developer.roblox.com script:

local Players = game:GetService("Players")
local character = Players.LocalPlayer.Character
if not character then
	character = Players.LocalPlayer.CharacterAdded:Wait()
end
 
local humanoid = character:WaitForChild("Humanoid")
 
-- Create new 'Animation' instance
local kickAnimation = Instance.new("Animation")
-- Set its 'AnimationId' to the corresponding animation asset ID
kickAnimation.AnimationId = "rbxassetid://3532148210"
 
-- Load animation onto the humanoid
local kickAnimationTrack = humanoid:LoadAnimation(kickAnimation)
 
-- Play animation track
print("brah")
kickAnimationTrack:Play()
 
-- Connect 'KeyframeReached' event to a specific named keyframe
kickAnimationTrack.KeyframeReached:Connect(function(keyframeName)
	print(keyframeName)
	if keyframeName == "KickEnd" then
		kickAnimationTrack:Play()
	end
end)

my code inside a tool (tool is inside starter character and Is In the character when the game plays)

script.Parent.Activated:Connect(function()
	print("Activated")
	local humanoid = script.Parent.Parent:FindFirstChildWhichIsA("Humanoid")
	local anim = script.Parent.Animation
	local animtrack = humanoid:LoadAnimation(anim)
	animtrack:Play()
end)

Any solutions? Others have told me that this code should work Thanks!