How would i go about fixing my data store?

I am trying to make it when u join you start at level 1 and max exp is 100 but when I start all values = 0 I have tried setting the stat values to this and also tried putting else level.value = 1 etc under the if success part my question is how would I make it that when you play you start at level 1 and max exp 100 here is the code for my data store

local DataStoreService = game:GetService("DataStoreService") local playerData = DataStoreService:GetDataStore("PlayerData")

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

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


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


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

local Strength =Instance.new("IntValue",leaderstats)
Strength.Name = "Strength"
Strength.Value = 0

--level change at max exp--
exp.Changed:Connect(function(val)
    if exp.Value >= maxExp.Value then
    Level.Value = Level.Value + 1
    exp.Value = exp.Value - maxExp.Value 
        maxExp.Value = maxExp.Value * 1.25
        Strength.Value = Strength.Value + 5
    end
end)

local levelData
local xpData
local maxData

    local success,errormessage = pcall (function()  
    levelData = playerData:GetAsync(player.UserId..("Level"))
    xpData = playerData:GetAsync(player.UserId..("Current"))
    maxData = playerData:GetAsync(player.UserId..("Max"))

    end)

    if success then
    Level.Value = levelData
    exp.Value = xpData
    maxExp.Value = maxData
else
        warn("there was an loading error".. errormessage)
end

game.Players.PlayerRemoving:Connect(function(player)
    local success,errormessage = pcall (function()
    playerData:SetAsync(player.UserId.."Level",player.leaderstats.Level.Value)
    playerData:SetAsync(player.UserId.."Current",player.leaderstats.Current.Value)
    playerData:SetAsync(player.UserId.."Max",player.leaderstats.Max.Value)

end)
        if success then 
        print("Data Has been saved successfuly")
    else
        warn("there was an error saving")
        end

end)

end)