You're most welcome! Thank you for your reply, monabsan
,Thank you too, for sharing your understanding of the situation, and for your new request.
Re: Is there a way to get from Apple a backup from my icloud prior to that delete action,
that was on Sunday 31st of July, if I remind correctly?
As we are all Apple users, like yourself, in this community, we can not speak for Apple.
Only back-ups you have placed in iCloud, and thus would already have access to, can be recovered.
Recently deleted photos would usually stay available for 30 days to be restored;
(Photos > Albums, Recently Deleted in the Utilities section). Once permanently deleted that is permanent.
Permanently deleted photos can not be recovered,
Seems Apple continually reminds us to back-up our important data, especially before updates, and changing devices, etc..
Sometimes friends or family may have copies of photos, or a back-up may be stored on a Mac or PC, or external storage.
iCloud storage is mainly for sync. of data across devices, and is managed by the person who subscribes.
Re: I really expect that Apple has some backups that can be recovered with the approval of the owner.
Sorry. It seems very unlikely that you could recover permanently deleted photos.
The place to double-check would be with the Photos Support Team:
There is a "Get Support" link (and a support app) at the bottom of their website (link below)
Photos - Official Apple Support
All the best :-)