OnePlus
Remove a Home Screen Folder auf OnePlus
OxygenOS treats folders as a container, not as a standalone object you can remove with a single tap. That is why there is no 'Delete folder' entry in any long-press menu on a OnePlus phone.
The folder only exists as long as it holds at least one app. Empty it out and the system removes the container automatically, placing the last app directly on the home screen.
How to clear a folder
Open the folder by tapping it, then use Tap on a folder ➔ Tap and hold an app ➔ Drag the app out of the folders area ➔ Release the app to position it on home screen. Repeat this for every app inside.
Once only one app remains, OxygenOS deletes the folder shell and drops that last app onto your home screen grid.
This behavior applies regardless of how many apps the folder contains or where it sits on the layout. If you want to keep the apps grouped but move the whole set to a different spot, drag the folder itself first, then empty it in the new location.