There are three important factors people often overlook:
Aspect ratio compatibility - A 4:3 image on a 16:9 monitor will either crop awkwardly or stretch.
Contrast balance - Wallpapers with too many bright or busy details can make icons hard to read.
Composition - Images with some empty space or smooth gradients tend to look cleaner and more professional.
Sites that curate their collections well - including https://fondecranvip.com/ - often let you browse by style such as minimal, nature, abstract, cars, anime, or dark themes, which helps match your wallpaper to your interface layout.
