how to restore my gallery

If you have a backup on iCloud or iTunes, you can get almost everything depending on when the backup was taken.

If you have turned on Messages in iCloud, iCloud Photos, Mail, Health data, call history under iCloud, and files you store in iCloud Drive your content is automatically stored in iCloud and is available on all devices that use the same Apple ID.

Regarding your data…

1. If you have an iCloud or iTunes latest backup, then there is nothing to worry about. Just restore from it, else...
2. If You have synced your data to iCloud, then what you will get back is what you have synced to iCloud and uploaded to iCloud Drive;
   1. The information that is synced and stored in iCloud, like Contacts, Calendars, Bookmarks, Mail*, Notes, Voice Memos, Messages*, shared photos, iCloud Photos*, Health data*, call history*, and files* you store in iCloud Drive.
   2. *-If you have turned on Messages in iCloud, iCloud Photos, Mail, Health data, call history under iCloud, and files you store in iCloud Drive your content is automatically stored in iCloud and is available on all devices that use the same Apple ID
3. You have imported your Photos & Videos to Mac/PC then they are safely residing there on Mac/PC
4. You have uploaded some of it to Cloud Drives using the Files app (iCloud Drive, Google Drive, OneDrive, DropBox, Flickr, box, AmazonDrive, Adobe Creative Cloud etc). The data remains there.
5. If you have not backed up or do not have the latest backup, nor imported nor you have synced or uploaded your data to cloud drives prior to the situation that you are in, then I am sorry, all your data is lost.

If nothing of the above is true then I am sorry to say you have lost the data and the device.

guzel33 wrote:

my phone reset to factory settings while i had it in my hands and deleted all my data and gallery, how do i get all my images back if i had only 5gb of storage on iCloud

When you say "how do I get all my images back if I had only 5gb of storage on iCloud", is that a way of telling us that you didn't have enough iCloud storage space to hold your backups and synchronized data?

That therefore, many of your photos did not exist on iCloud – either

• In iCloud Photos, if you had it turned on; or
• in iCloud backups that included photos (if you were not using iCloud Photos but were making such backups)

If there were photos that weren't synchronized or backed up to iCloud (for lack of space), and you did not have copies elsewhere before the factory reset of the phone, those photos are gone.