Here are some enchanting nature photographs (https://medium.com/freely-sharing-the-sum-of-all-knowledge/the-majesty-of-nature-and-an-abundance-of-birds-on-full-display-in-wiki-loves-earth-2020-ee956cf74f2d) from Wikipedia that would make spectacular wallpaper. The images are in very high resolution, some are 4K or higher. So you might want to size them down and the page takes a while to load because of that. Enjoy.
I got these too as a Wiki donor. I downloaded a few of the Asian scenery pics for desktop backgrounds.
Same reason I received a link to them. A nice little gift in return.