If you need to hide the dumb notch, I’d take my nice wallpaper, scale it down to the exact resolution, and just add a black bar as high as the menu bar is. This

If you need to hide the dumb notch, I’d take my nice wallpaper, scale it down to the exact resolution, and just add a black bar as high as the menu bar is. This can be a bit ugly when the wallpaper appears without the menu bar, but it’s a fine solution nonetheless. (I had to do this in Big Sur, since the OS thought my wallpaper works best with a black text on the menu bar, which wasn’t actually too readable.)