WD passport back up file confusion

Hi all,

Trying to recover some photos from my wd passport drive?
Found the back up from 2018, when I open it it just shows 348 compressed files, doesn’t state which is photo’s etc.
Is there a way of seeing or labelling files so I know which file is photo’s?
I’m not very savvy on P.C. so please make your answers or solution simple please.

thanks.