If you deleted a collection and you want to recover it, go to the trash. Then, hover on the collection you want to restore and select the arrow icon to restore it.
Alternatively, open the trash from the status bar in the bottom right corner of Postman.
- If you cannot find your collection, it is likely that it might have been moved to another workspace. You can see all your collections from your View Profile > Collections.
- If you have lost data, try to be unblocked with other options provided in the following article: I lost my data.