RainWallpaper is a recently launched Live Wallpaper program and is optimized for Windows 11/10. The makers of this program market the app as portable, and I would say it is pretty light at 100MB.

Choose from 3D images of superheroes, space, black neon ... of us love to watch and listen to the rain on a window, and the renamed Rain Live Wallpaper lets you observe rain against your screen ...

If your Windows ... to turn black. Running a System File Checker (SFC) scan can help repair any integrity violations. A minor setting change can sometimes cause the wallpaper to become corrupted ...