how do I delete these image thumbnails from a crazy app?

[Android Central Question]

When I uploaded my images from my Galaxy Note 9, there were over 9000 images on my phone from a game app that I immediately deleted. How do I get those images off of my phone now?

 

[B. Diddy]

Welcome to Android Central! Those images are probably generated by the game for its own use. If you delete them from the phone, the game will probably regenerate most if not all of them. To avoid importing them to your computer, don't use Windows Explorer's Import Pictures & Videos option, because that option will indiscriminately bring over every single image file that's stored on the phone, regardless of its origin. Instead, manually select the photos in the /DCIM/Camera directory and drag and drop them to the computer hard drive.