Better visual cues for a enhancing user behaviour

So I have been working on a digital project where the product is an online presentation software where the user(Teacher) has presentation slides to select and conducts presentations to the students.

The user buys slides from the marketplace which will be added to the library of the software. The slides can only be moved and cannot be copied. So the user makes a folder and moves slides in it to organize them. He can also put selfuploaded stuff like pdf in that folder.

My question is, when the user deletes the folder(on the mainpage) how can we let the user know that only the self uploaded content was deleted and the bought content was moved back to the mainpage of the library? an animation? Text Toast?

Maybe it is selfevident on the main page, cuz moved content will visably take space and show itself. But what if the user is deleting a folder inside a folder?

Please refer to the images.

Thanks in advance