iPhone 12 Pro Missing photos!

[AppleFan33]

Please can anyone help? So I have an iPhone 12 Pro, which is great… and an oldish (2012) iMac running macOS High Sierra (not updated as I don’t want to lose iDVD)
My Mac is so slow/no memory …and with over 44,000 photos, and 2,000 videos, I thought I’d buy the biggest iCloud storage and upload to the icloud as my phone does. It took 5 days solid… but now, there are over 600 photos missing off iMac (and I don’t know which ones), and when I go to ‘recents’ on my iPhone lots of random pics that were there (taken on iPhone), are no longer! I am so upset - photos are so precious to me… and I wish I’d never messed about with it all!!!
Is there anything I can do? Thanks in advance.

 

[Zazoh]

When you synch all devices to iCloud. If you delete an image on one device, it removes it from the other. Is it possible you at one time had one of the missing photos on your phone and deleted it from there? Or I in another library?

One is able to have several photo libraries but only one is able to synch as the iCloud library to all devices. About once a year I create a new system photo library which synchs to all devices and leave my other photos in libraries by year if I need to go back to them.

44k images is alot to have in one basket. Also iCloud should not be your only backup. So save those images somewhere else as well.

 

[jav6454]

Please can anyone help? So I have an iPhone 12 Pro, which is great… and an oldish (2012) iMac running macOS High Sierra (not updated as I don’t want to lose iDVD)
My Mac is so slow/no memory …and with over 44,000 photos, and 2,000 videos, I thought I’d buy the biggest iCloud storage and upload to the icloud as my phone does. It took 5 days solid… but now, there are over 600 photos missing off iMac (and I don’t know which ones), and when I go to ‘recents’ on my iPhone lots of random pics that were there (taken on iPhone), are no longer! I am so upset - photos are so precious to me… and I wish I’d never messed about with it all!!!
Is there anything I can do? Thanks in advance.

If they go missing, they go to the trash folder in your iPhone. Check there.