Thank you. Wow what a hot mess. So many sub folders. Maybe I should approach this a different way. What I want to do is to either make a copy of the files or download the files from iCloud so I can have an additional backup. What's the best way to do this?
Thanks
That's what databases look like.
If you're using iCloud Photo Library, you could consider the library on your Mac to be a backup. iCloud Photo Library is your off-site backup, Photos Library on your Mac is a duplicate of that. If you backup your entire Mac (say, with Time Machine), then you're covered with both on-site and off-site backup.
If you're not backing up your entire Mac (and don't want to), the easiest is to simply backup/copy the entire Photos Library. Most of the space in the library is due to the original image files (despite all the folders and other files you find in there). If something happens to your Mac, then restoring the library gets Photos back up in running order, with all the organization and edits you performed. If you only have the original images backed up, you've potentially lost a whole lot of hard work.
If you are not using iCloud Photo Library, that backup of the entire library is essential. If you are using iCloud Photo Library, than backing up the entire database is not as essential, as you'll get it all back from the cloud, but it's still a very good idea.
If the time comes that you want/need to extract the original images from the library, do it then. I often run into people who say things like, "I really don't have to backup everything, just the things I need." I usually reply with a quote from a Joni Mitchell song, "Don't it always seem to go that you don't know what you've got 'til it's gone?" A 1 TB external HDD costs less than 10 rolls of color film (with processing).
As to downloading from iCloud - presuming you're using iCloud Photo Library, that's automatic. Go into Photos > Preferences > iCloud and select Download Originals to this Mac to be sure you have full-resolution images on your Mac.
If you're not using iCloud Photo Library, then be sure that System Preferences > iCloud has My Photo Stream selected, and confirm that in Photos > Preferences > iCloud. That will automatically import photos that are added to My Photo Stream on your other devices.