Data store script is not properly storing data, how do I fix this?

I'm confounded, I really am. The output shows no errors. There's a folder in the player called "PlayerOptions" in my game with the rumble and physics values. The answer is probably really obvious and stupid, so I apologize in advance.

Through some experimenting, I narrowed the reason down to either the data table is never created or the values are never saved to the table.

PlayerClass is a string value, Winnings is a number value, Physics is a string value, and Rumble is a boolean value. Here's the script"

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


function onPlayerEntered(Player) 

    local Data = DataStore:GetAsync(Player.UserId) -- Get Data
    leaderstats = Player:WaitForChild("leaderstats")
    PlayerOptions = Player:WaitForChild("PlayerOptions")


    while true do 
        if Player.Character ~= nil then break end 
        wait(5)
    end 


    ----leaderboard----
    local TotalWins = leaderstats.Winnings
    local classname =  leaderstats.PlayerClass

    ----options----
    local Rumble = PlayerOptions.Rumble
    local Physics =  PlayerOptions.Physics



    if type(Data) ~= "table" then
        Data = nil
    end

    if Data then
        if Data.classname ~= nil then
            classname.Value = Data.classname end
        if Data.TotalWins ~= nil then
            TotalWins.Value = Data.TotalWins end

        if Data.Physics ~= nil then
            Physics.Value = Data.Physics end 
        if Data.Rumble ~= nil then
            Rumble = Data.Rumble end
    end
end

game.Players.ChildAdded:connect(onPlayerEntered)

game.Players.PlayerRemoving:Connect(function(Player) -- save function here

    --[{ DATA STORE SAVING }]--

    DataStore:SetAsync(Player.UserId, { -- gets data
        classname = leaderstats["PlayerClass"].Value,
        TotalWins = leaderstats["Winnings"].Value,

        Physics = PlayerOptions["Physics"].Value,
        Rumble = PlayerOptions["Rumble"].Value  
    })

end)