Why is this only making a Button for the 1st Player that joins? and how to fix it

local PlayersScroll = {}


sf = script.Parent

for _, player in pairs(game.Players:GetPlayers(PlayersScroll)) do
    if player.Character then
        local su = Instance.new("TextButton")
        su.Parent = sf
        local uid = player.UserId
        su.Name = player.Name
        su.Size = UDim2.new(1, 0, 0.04, 0)
        su.Text = player.Name..":"..uid
        su.Font = "SourceSansLight"
        su.FontSize = "Size28"
        su.TextWrapped = true
        su.BackgroundColor3 = UDim2.new(115, 115, 115)
        PlayersScroll[player.Name] = su

    end
end

game.Players.PlayerAdded:connect(function(player)
    if player.Character then
        local su = Instance.new("TextButton")
        su.Parent = sf
        local uid = player.UserId
        su.Name = player.Name
        su.Size = UDim2.new(1, 0, 0.04, 0)
        su.Text = player.Name..":"..uid
        su.Font = "SourceSansLight"
        su.FontSize = "Size28"
        su.TextWrapped = true
        su.BackgroundColor3 = UDim2.new(115, 115, 115)
        PlayersScroll[player.Name] = su
        end
    end)


game.Players.PlayerRemoving:connect(function(player)
    if PlayersScroll[player.Name] ~= nil then

        PlayersScroll[player.Name]:Destroy()

        table.remove(PlayersScroll, player.Name)

    end

end)