dr3wy wrote:
I was looking for newly downloaded wallpapers in the folder "4KSDR240FPS" and they weren't showing. Is it possible that these files are sent to another folder even though I do not believe that I have changed any settings? What could the issue be, and how could I resolve this?
? you do not give the complete path simply posting "4KSDR240FPS"
What is the issue exactly.
Are your wallpapers available through the System Settings...?
Wallpaper settings on Mac
Use a screen saver on your Mac - Apple Support
What I see— this was the path back in macOS Sonoma...from the Finder>Go>Go to Folder copy & paste:
/Library/Application Support/com.apple.idleassetsd/Customer/4KSDR240FPS
I see nothing in that folder....in macOS Tahoe(?)

However in macOS Tahoe see if this gets you any closer...Finder>Go>Go To Folder copy & paste:
/Library/Application Support/com.apple.idleassetsd/