I lost my ads tool. Please help me find a way to make it again.
You mean a component right?
If the component deleted from your screen now you can undo that action clicking CTRL+Z in your keyboard or click the arrow in left side down in the Editor. But if you have refreshed the tab, close that app and opened again the history is clearing and Unfortunately you can’t Undo the actions that you built. You need to build them again.
Hope I understood your question correctly!