Recover permanently deleted photos and videos

Read this support article for full information --> Delete photos on your iPhone or iPad - Apple Support

- "If you want to permanently delete your photos or videos, you can remove them from the Recently Deleted album. When you delete a photo from this album, you can't get it back."

If you were storing photos on a computer that are not in a library connected to iCloud, you can see if there is a copy there.

Correct. Permanent means permanent. You can only recover from your backups or original sources.

Correct. You can only get them back if you had copies stored in places that are not synced with iCloud Photos. Do you have a Time Machine backup?