Choose Auto-Rotate and set the frequency of rotation. Note: The process is nearly identical on macOS Ventura: access System Settings > Wallpaper and scroll down to upload your custom folder with images, or choose an album from Photos. You can still just select one of the images out of the folder. If you’ve added a folder, it should now be visible in the sidebar of the Desktop & Screen Saver window. Add your own folder or use your album from Photos.Click on the plus sign in the bottom-left corner or choose Photos.Go to System Preferences > Desktop & Screen Saver.There’s also another way to add your own group of images, which gives you more flexibility in terms of setting them to automatically rotate later on: Rotate beautiful backgrounds automatically Click on any image to set it as a background (you might need to click the download button first).If your Mac runs macOS 13 Ventura, the flow is a bit different: Click on any of the pictures to set it as your background.In the sidebar, open Apple > Desktop Pictures.Open System Preferences > Desktop & Screen Saver.If you simply want to switch away from the default Mac desktop wallpaper, you should first try one of the Apple backgrounds already pre-installed on your Mac. Try free How to change wallpaper on Mac from System Preferences

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