This guide is also so that you can find your photographs you have taken with your camera during your chases, not screenshots you taken on Steam. At the end of each chase, you will be able to save your photographs, but not view them, as it is not implemented in the game.

Finding your saved photographs are quite simple. Go to C:\Users\name\AppData\LocalLow\Sublime\OUTBRK\SavedPhotos, and you should find them there right away.

If you are unable to find the AppData folder when looking in your file (name), make sure that you have Hidden Items enabled. This can be done by opening the view tab in your file explorer, hover over the Show button, and making sure that Hidden Items has a checkmark.

To locate this file, go to:

~/.steam/debian-installation/steamapps/compatdata/1107320/pfx/drive_c/users/steamuser/AppData/LocalLow/Sublime/OUTBRK/SavedPhotos

Thanks to Baral'heia for providing this information!