How do I make a saving death counter leaderstats - roblox

Question

So I am trying to make a game, but cant keep the stats. I already have a working death counter but can't figure out how to save it, it resets everytime I rejoin. Here are two codes I've tried:
1)
local pointsDataStore = game:GetService("DataStoreService"):GetDataStore("Deaths")
game.Players.PlayerAdded:Connect(function(player)
local playerKey = "Player_" .. player.UserId
local success, err = pcall(function()
pointsDataStore:UpdateAsync(playerKey, function(oldValue)
local newValue = oldValue or 0
newValue = newValue + 0
return newValue
end)
end)
end)
2)
local DS = game:GetService("DataStoreService"):GetDataStore("Points")
game.Player.PlayerAdded:connect(plr)
local leaderstats = Instance.new("Model",plr)
leaderstats.Name = "leaderstats"
local currency = Instance.new("IntValue", leaderstats)
currency.Name = "Deaths"
currency.Value = 1
while wait(5) do
DS:SetAsync(plr.userId.."_DS", currency.Value)
end
end)

Answer 1

I would load the value from a datastore when the player joins, then increment it on each death and also save it to the datastore.
Note, that for triggering death, the script is using the Humanoid.Died event.
local deathsStore = game:GetService("DataStoreService"):GetDataStore("Deaths")
function playerAddedHandler(plr)
-- key that is used to store the death value
local playerKey = "Player_" .. plr.UserId
-- Add leader board
local leaderstats = Instance.new("Folder", plr)
leaderstats.Name = "leaderstats"
-- Add "Deaths" column to leader board
local deaths = Instance.new("IntValue", leaderstats)
deaths.Name = "Deaths"
-- Load Deaths value from previous game
deaths.Value = deathsStore:GetAsync(playerKey)
-- Hook up event handler that is triggered when character dies
plr.CharacterAdded:Connect(function(char)
char.Humanoid.Died:Connect(function()
-- increment death value on the leader board
plr.leaderstats.Deaths.Value = plr.leaderstats.Deaths.Value + 1
-- save the value in our deaths datastore
local success, err = pcall(function()
deathsStore:SetAsync(playerKey, plr.leaderstats.Deaths.Value)
end)
end)
end)
end
game.Players.PlayerAdded:Connect(playerAddedHandler) -- call function "playerAddedHandler" every time a player joins the game
Also. Don't forget to enable datastore usage, otherwise it will give you a 403 error in your output. You do that on the roblox website in your game's basic settings: