How do I scroll through my photos outside Photos on Mac?
I just had my data migrated from my pc to my new Macbook Air and they didn't put my photo library into "Photos"; instead it remains in a folder in my Docs. I can open it just fine, I can see the (tiny) thumbnails, but if I open one of the images, I can't figure out how to move to the next image in the series (on my PC I just used the right-pointing arrow, but that doesn't do a thing on the Mac). Instead, I have to close the photo I'm viewing, which does not return me to the thumbnails but kicks me back out to the desktop, and then reopen the folder, reopen the thumbnails, choose the next image, repeat... Please, is there any easy way to scroll through my images? (The thumbnails are tiny and I also can't magnify them so just peering at them's not an option, although I'm open to magnification suggestions!)
MacBook Air, iOS 9.3.5