recover files deleted from icloud

See the article https://support.apple.com/guide/icloud/recover-deleted-files-mmae56ea1ca5/icloud

One thing to try: use any computer internet browser, log into icloud.com, click Account Settings near the top middle of the screen, scroll down to the Advance section of the next screen and click Restore Files.

The files are erased from iCloud server permanently after 30 days see the articles https://support.apple.com/en-us/HT209174

https://support.apple.com/en-us/HT204157

No way that I know of from iCloud. If they were synced from a Mac and you have a Time Machine or other backup of the Mac and if there was a local copy on the Mac, that would be a possibility.