Ok a few years back I backed up everything onto iCloud , I was paying for extra storage, and the iPhone 8+ still wasn’t optimizing so it was running out of memory , I have an iPad Air also , so I also put it into the storage on that , and turned it off ,then I deleted the things off of the phone that were already put into iCloud , when I turned around , it was almost spooky , it went on a search and destroy mission and completely wiped out almost 2,000 family pics and videos from all of the iCloud and anywhere it could find , then as soon as I powered up the iPad , it marched right in and wiped it out also , Apple support tracked all of it , unfortunately had no explanation , after 10 hrs + on the phone .