My DataStore isn't saving no matter what, anyone have any idea?

Heres my leaderboard script that 100 percent works (change exp and kills to whatever name you want)

local DS = game:GetService("DataStoreService")
local ExpStore = DS:GetOrderedDataStore("Exp")

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

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

    pcall(function()
    local ExpVal = ExpStore:GetAsync(player.UserId)
    if ExpVal then
        exp.Value = ExpVal      
    end 
  end)

game.ServerStorage.GiveExp.Event:Connect(function(amount,plr)
    if player.Name == plr.Name then
        exp.Value = exp.Value + amount
    end
  end)
end)

game.Players.PlayerRemoving:Connect(function(player)
    pcall(function()
        if player:WaitForChild("leaderstats") and player.leaderstats:WaitForChild("Exp") and player.leaderstats.Exp.Value > 0 then
            ExpStore:SetAsync(player.UserId, player.leaderstats.Exp.Value)

        end
    end)
end)
---------------------------------------------------------------
local Ds = game:GetService("DataStoreService")
local KillsStore = Ds:GetOrderedDataStore("Kills")

game.Players.PlayerAdded:Connect(function(player)
    local leaderstats = player:WaitForChild("leaderstats")
    leaderstats.Name = "leaderstats"

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

    pcall(function()
    local KillsVal = KillsStore:GetAsync(player.UserId)
    if KillsVal then
        Kills.Value = KillsVal      
    end 
  end)

game.ServerStorage.GiveKills.Event:Connect(function(amount,plr)
    if player.Name == plr.Name then
        Kills.Value = Kills.Value + amount
    end
  end)
end)

game.Players.PlayerRemoving:Connect(function(player)
    pcall(function()
        if player:WaitForChild("leaderstats") and player.leaderstats:WaitForChild("Kills") and player.leaderstats.Kills.Value > 0 then
            KillsStore:SetAsync(player.UserId, player.leaderstats.Kills.Value)

        end
    end)
end)
--------------------------------------------------------
local Ds = game:GetService("DataStoreService")
local SwordBuxStore = Ds:GetOrderedDataStore("SwordBux")

game.Players.PlayerAdded:Connect(function(player)
    local leaderstats = player:WaitForChild("leaderstats")
    leaderstats.Name = "leaderstats"

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

    pcall(function()
    local SwordBuxVal = SwordBuxStore:GetAsync(player.UserId)
    if SwordBuxVal then
        SwordBux.Value = SwordBuxVal        
    end 
  end)

game.ServerStorage.GiveSwordBux.Event:Connect(function(amount,plr)
    if player.Name == plr.Name then
        SwordBux.Value = SwordBux.Value + amount
    end
  end)
end)

game.Players.PlayerRemoving:Connect(function(player)
    pcall(function()
        if player:WaitForChild("leaderstats") and player.leaderstats:WaitForChild("SwordBux") and player.leaderstats.SwordBux.Value > 0 then
            SwordBuxStore:SetAsync(player.UserId, player.leaderstats.SwordBux.Value)

        end
    end)
end)

PUT THIS IN SERVERSCRIPTSERVICE