Unfortunately, I don't know my way around very well, does anyone know if and how I can set something from Google Photos as a background on my laptop?
Download and set as wallpaper.
Either that or mouse right click and then on "set as background"
Thanks, I did it
Yes, save it and then set it as the background.
But only see what your desktop resolution is. Otherwise the background is completely pixelated, small, or distorted