im making a script and its waiting for something to be not found in a folder i would try a for loop but Thats not possible cause im using a repeat wait loop and cant add a for loop after until
If you are trying to NOT find a value then simply do (if you are making an if statement)
if not player:FindFirstChild(add object or value name here) then -- code if they don't have object/value end
Be sure to wait until player is fully loaded otherwise the if would run due to incomplete loading.