My DataStoreService wont save the data when i leave the game?

So, for a brief backround... I tried making a DataStore that would save my total deaths. But it does not work?

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

game.Players.PlayerAdded:Connect(function(player)
 local leaderstats = Instance.new("Folder", player)
 leaderstats.Name = "leaderstats"

 local Deaths = Instance.new("IntValue", leaderstats)
 Deaths.Name = "Deaths"

 player.CharacterAdded:Connect(function(char)
  Deaths.Value = Deaths.Value + 1

  if Deaths.Value == 500 then
   print("You leveled up!")
  end

  local PlayerUserId = "Player_"..player.UserId

  -- Load Data

  local Data
  local sucess, errormessage = pcall(function()
   Data = myDataStore:GetAsync(PlayerUserId)
  end)

  if sucess then
   -- Setting our data equal to the current cash
   Deaths.Value = Data
  end



 end)
 game.Players.PlayerRemoving:Connect(function(player)
  local PlayerUserId = "Player_"..player.UserId

  -- Setting the data

  local data = player.leaderstats.Deaths.Value

  local sucess, errormessage = pcall(function()
  myDataStore:SetAsync(PlayerUserId, data)
  end)
  if sucess then
   print("Data succesfully saved")
  else
   print("Error occured whilst saving leaderstats...")
   warn(errormessage)
  end
 end)
 end)

And yes i have enabled API services