Tip: Have a look at osxphotos, an open source software you can run on your Mac and export all your Apple Photos to your own full structure, including any metadata. So you get a copy that is independent on Apple photos and can be used in any photo library system later, if need be. I send that export to my Synology and C2 every day. I guess I just don’t liked Synology photos backup from phone, had to manually open it all the time.