im trying to set my own idle animation but it won't work?

i used the default script from roblox characters and put it in startercharacterscripts, here's the relevant part, and yes i did change the animations ID with the same one i put in the script also set the animation i used in a loop and put it on idle for the animation priority

local Character = script.Parent
local Humanoid = Character:WaitForChild("Humanoid")
local pose = "Standing"

local userNoUpdateOnLoopSuccess, userNoUpdateOnLoopValue = pcall(function() return UserSettings():IsUserFeatureEnabled("UserNoUpdateOnLoop") end)
local userNoUpdateOnLoop = userNoUpdateOnLoopSuccess and userNoUpdateOnLoopValue

local userEmoteToRunThresholdChange do
	local success, value = pcall(function()
		return UserSettings():IsUserFeatureEnabled("UserEmoteToRunThresholdChange")
	end)
	userEmoteToRunThresholdChange = success and value
end

local userPlayEmoteByIdAnimTrackReturn do
	local success, value = pcall(function()
		return UserSettings():IsUserFeatureEnabled("UserPlayEmoteByIdAnimTrackReturn2")
	end)
	userPlayEmoteByIdAnimTrackReturn = success and value
end

local animateScriptEmoteHookFlagExists, animateScriptEmoteHookFlagEnabled = pcall(function()
	return UserSettings():IsUserFeatureEnabled("UserAnimateScriptEmoteHook")
end)
local FFlagAnimateScriptEmoteHook = animateScriptEmoteHookFlagExists and animateScriptEmoteHookFlagEnabled

local FFlagUserFixLoadAnimationError do
	local success, result = pcall(function()
		return UserSettings():IsUserFeatureEnabled("UserFixLoadAnimationError")
	end)
	FFlagUserFixLoadAnimationError = success and result
end

local AnimationSpeedDampeningObject = script:FindFirstChild("ScaleDampeningPercent")
local HumanoidHipHeight = 2

local EMOTE_TRANSITION_TIME = 0.1

local currentAnim = ""
local currentAnimInstance = nil
local currentAnimTrack = nil
local currentAnimKeyframeHandler = nil
local currentAnimSpeed = 1.0

local runAnimTrack = nil
local runAnimKeyframeHandler = nil

local PreloadedAnims = {}

local animTable = {}
local animNames = { 
	idle = 	{	
				{ id = "http://www.roblox.com/asset/?id=7141869877", weight = 1 },
				{ id = "http://www.roblox.com/asset/?id=7141869877", weight = 1 },
				{ id = "http://www.roblox.com/asset/?id=7141869877", weight = 9 }
			},
	walk = 	{ 	
				{ id = "http://www.roblox.com/asset/?id=507777826", weight = 10 } 
			}, 
	run = 	{
				{ id = "http://www.roblox.com/asset/?id=507767714", weight = 10 } 
			}, 
	swim = 	{
				{ id = "http://www.roblox.com/asset/?id=507784897", weight = 10 } 
			}, 
	swimidle = 	{
				{ id = "http://www.roblox.com/asset/?id=507785072", weight = 10 } 
			}, 
	jump = 	{
				{ id = "http://www.roblox.com/asset/?id=507765000", weight = 10 } 
			}, 
	fall = 	{
				{ id = "http://www.roblox.com/asset/?id=507767968", weight = 10 } 
			}, 
	climb = {
				{ id = "http://www.roblox.com/asset/?id=507765644", weight = 10 } 
			}, 
	sit = 	{
				{ id = "http://www.roblox.com/asset/?id=2506281703", weight = 10 } 
			},	
	toolnone = {
				{ id = "http://www.roblox.com/asset/?id=507768375", weight = 10 } 
			},
	toolslash = {
				{ id = "http://www.roblox.com/asset/?id=522635514", weight = 10 } 
			},
	toollunge = {
				{ id = "http://www.roblox.com/asset/?id=522638767", weight = 10 } 
			},
	wave = {
				{ id = "http://www.roblox.com/asset/?id=507770239", weight = 10 } 
			},
	point = {
				{ id = "http://www.roblox.com/asset/?id=507770453", weight = 10 } 
			},
	dance = {
				{ id = "http://www.roblox.com/asset/?id=507771019", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=507771955", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=507772104", weight = 10 } 
			},
	dance2 = {
				{ id = "http://www.roblox.com/asset/?id=507776043", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=507776720", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=507776879", weight = 10 } 
			},
	dance3 = {
				{ id = "http://www.roblox.com/asset/?id=507777268", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=507777451", weight = 10 }, 
				{ id = "http://www.roblox.com/asset/?id=507777623", weight = 10 } 
			},
	laugh = {
				{ id = "http://www.roblox.com/asset/?id=507770818", weight = 10 } 
			},
	cheer = {
				{ id = "http://www.roblox.com/asset/?id=507770677", weight = 10 } 
			},
}

-- Existance in this list signifies that it is an emote, the value indicates if it is a looping emote
local emoteNames = { wave = false, point = false, dance = true, dance2 = true, dance3 = true, laugh = false, cheer = false}

math.randomseed(tick())

function findExistingAnimationInSet(set, anim)
	if set == nil or anim == nil then
		return 0
	end
	
	for idx = 1, set.count, 1 do 
		if set[idx].anim.AnimationId == anim.AnimationId then
			return idx
		end
	end
	
	return 0
end

function configureAnimationSet(name, fileList)
	if (animTable[name] ~= nil) then
		for _, connection in pairs(animTable[name].connections) do
			connection:disconnect()
		end
	end
	animTable[name] = {}
	animTable[name].count = 0
	animTable[name].totalWeight = 0	
	animTable[name].connections = {}

	local allowCustomAnimations = true

	local success, msg = pcall(function() allowCustomAnimations = game:GetService("StarterPlayer").AllowCustomAnimations end)
	if not success then
		allowCustomAnimations = true
	end

	-- check for config values
	local config = script:FindFirstChild(name)
	if (allowCustomAnimations and config ~= nil) then
		table.insert(animTable[name].connections, config.ChildAdded:connect(function(child) configureAnimationSet(name, fileList) end))
		table.insert(animTable[name].connections, config.ChildRemoved:connect(function(child) configureAnimationSet(name, fileList) end))
		
		local idx = 0
		for _, childPart in pairs(config:GetChildren()) do
			if (childPart:IsA("Animation")) then
				local newWeight = 1
				local weightObject = childPart:FindFirstChild("Weight")
				if (weightObject ~= nil) then
					newWeight = weightObject.Value
				end
				animTable[name].count = animTable[name].count + 1
				idx = animTable[name].count
				animTable[name][idx] = {}
				animTable[name][idx].anim = childPart
				animTable[name][idx].weight = newWeight
				animTable[name].totalWeight = animTable[name].totalWeight + animTable[name][idx].weight
				table.insert(animTable[name].connections, childPart.Changed:connect(function(property) configureAnimationSet(name, fileList) end))
				table.insert(animTable[name].connections, childPart.ChildAdded:connect(function(property) configureAnimationSet(name, fileList) end))
				table.insert(animTable[name].connections, childPart.ChildRemoved:connect(function(property) configureAnimationSet(name, fileList) end))
			end
		end
	end
	
	-- fallback to defaults
	if (animTable[name].count <= 0) then
		for idx, anim in pairs(fileList) do
			animTable[name][idx] = {}
			animTable[name][idx].anim = Instance.new("Animation")
			animTable[name][idx].anim.Name = name
			animTable[name][idx].anim.AnimationId = anim.id
			animTable[name][idx].weight = anim.weight
			animTable[name].count = animTable[name].count + 1
			animTable[name].totalWeight = animTable[name].totalWeight + anim.weight
		end
	end
	
	-- preload anims
	for i, animType in pairs(animTable) do
		for idx = 1, animType.count, 1 do
			if PreloadedAnims[animType[idx].anim.AnimationId] == nil then
				Humanoid:LoadAnimation(animType[idx].anim)
				PreloadedAnims[animType[idx].anim.AnimationId] = true
			end				
		end
	end
end

Hopefully this will help https://www.youtube.com/watch?v=dKytA5tz-0Q&t=21s