How to save leaderstats?

so I make specific value on leader stats such as kills/death/total kills I only want to save my total kills but it won't save. ``

local DataStoreService = game:GetService("DataStoreService")
local DataStore = DataStoreService:GetDataStore("KillsStats")

game.Players.PlayerAdded:Connect(function(Player)
	local Leaderstats = Instance.new("Folder", Player)
	Leaderstats.Name = "leaderstats"
	local Kill= Instance.new("IntValue", Leaderstats)
	Kill.Name = "Kills" 
	Kill.Value = 0
	local deaths = Instance.new("IntValue", Leaderstats)
	deaths.Name = "Deaths"
	deaths.Value = 0
	local Kills= Instance.new("IntValue", Leaderstats)
	Kills.Name = "Total Kills" 
	Kills.Value = 0
	Player.CharacterAdded:connect(function(char)

		local humanoid

		repeat
			humanoid = char:FindFirstChild("Humanoid")
			wait()
		until humanoid

		humanoid.Died:connect(function()

			deaths.Value = deaths.Value + 1

			local Data = DataStore:SetAsync(Player.UserId)
			if Data then
				Kills.Value = Data 
			end
		end)

		end)

	end)


game.Players.PlayerRemoving:Connect(function(Player)
	DataStore:SetAsync(Player.UserId, {
		["Total Kills"] = Player.leaderstats.Kills.Value;})
end)