Export photos and videos from Photos for Mac app in year-wise or album-wise folders. Save on Mac, Google Drive, Dropbox or external drive.
Photos Takeout makes it super-easy: Select years, albums or moments. Click Export, and it's all saved in your chosen location in a sensible folder sub-folder hierarchy.
(Don't even try it with Photos app's Export function: you'll end up with just one humongous, unusable folder).
Examples of when to use Photos Takeout: