Data Stores will not load data. How to fix?

This is my code:

local DataStoreService = game:GetService("DataStoreService")
local PointsStore = DataStoreService:GetDataStore("BBSystems", "PointsValueHolder")

game.Players.PlayerAdded:Connect(function(Player)
	local Key = "uid_" .. Player.UserId
	local leaderstats = Instance.new("Folder")
	local Points = Instance.new("NumberValue")
	local Rank = Instance.new("StringValue")
	
	leaderstats.Parent = Player
	leaderstats.Name = "leaderstats"
	
	Points.Parent = leaderstats
	Points.Name = "Points"
	Points.Value = PointsStore:GetAsync(Key)
	
	Rank.Parent = leaderstats
	Rank.Name = "Rank"
	Rank.Value = Player:GetRoleInGroup(4494167)
end)

game.Players.PlayerRemoving:Connect(function(Player)
	local Key = "uid_" .. Player.UserId
	PointsStore:SetAsync(Key, Player.leaderstats.Points.Value)
end)

and for some reason It will not load the data up when the play joins (Im not sure if it saves it either)

If you could help, that would be much appreciated!

try using a pcall to get the data and set it to a variable. this always works for me

local aDataStore = game:GetService("DataStoreService"):GetDataStore("aDataStore")

game.Players.PlayerAdded:Connect(function(Player)
    local Key = "uid_" .. Player.UserId
    local leaderstats = Instance.new("Folder")
    local Points = Instance.new("NumberValue")
    local Rank = Instance.new("StringValue")

    leaderstats.Parent = Player
    leaderstats.Name = "leaderstats"

    Points.Parent = leaderstats
    Points.Name = "Points"
    Points.Value = aDataStore:GetAsync(Key)

    Rank.Parent = leaderstats
    Rank.Name = "Rank"
    Rank.Value = Player:GetRoleInGroup(4494167)

	local player_data_points

    pcall(function()
        player_data_points = aDataStore:GetAsync(Key)  
    end)

    if player_data_points ~= nil then
        Player.leaderstats.Points.Value = player_data_points
    end

end)

game.Players.PlayerRemoving:Connect(function(Player)
    local Key = "uid_" .. Player.UserId
    aDataStore:SetAsync(Key, Player.leaderstats.Points.Value)
end)