I hope desktop shortcut keys settings are supported.

[iamnightsky]

I hope to set up one (or a set) of desktop shortcut keys to quickly switch to the next live wallpaper by pressing the keys when on the desktop. This way, I won't have to open the application interface or precisely but laboriously use the mouse to switch via the small icon in the lower right corner of the Windows desktop. These shortcut keys could also be used to implement other functions (such as pausing wallpaper playback, muting the wallpaper, etc.).

[rocksdanister]

Not supported, you will have to write a script:
https://github.com/rocksdanister/lively/wiki/Command-Line-Controls