How to delete Images on Android 8.1.0?

[lads]

Android is complaining of dwindling storage space. I regularly delete personal files to comply with its demands and can now use but 20 Gb of a 32 Gb storage unit. Recently I noticed an item called Images in the Storage -> Photos & videos dialogue:

The trash bin of the Photos application is empty, and so far I could not identify these "images" in the system. How can I delete them?

Thank you.

 

[exninja]

Those are your photos and videos stored on your phone. Can you see them in your Photo app?