Where to Find Apple Screensaver Images?

Where are all the Apple screensaver images on Big Sur? I can see the formats to choose, but all that beautiful content has disappeared from the systems preferences Desktop/Screensaver link. Why in the world would someone think that was a good idea? Or to remove the option to add your own images from the page. I am sure the stuff is now somewhere, but why make it harder and more complicated? Just another example of someone thinking they have to mess with something that isn't broken.