All of my iphotos from icloud have downloaded onto my phone and i have about 16,000 photos but i don't want all of them on my phone, is there a setting to fix this or do i have to go through and delete all of the photos that i do not want?
iPhone 8 Plus, iOS 12
iCloud Photos is a syncing service. All photos will be on iCloud and on your device. Any photo you delete from a device where iCloud Photos is turned on will also be deleted from iCloud and from any other device connected to iCloud Photos. You can potentially reduce the storage space required on a device by turning on Optimize Storage. See: Set up and use iCloud Photos - Apple Support
Apple does not currently offer cloud-only storage for photos. If that is what you want or need, you may want to explore 3rd party options such as Google Photos or Dropbox.
iCloud Photos is a syncing service. All photos will be on iCloud and on your device. Any photo you delete from a device where iCloud Photos is turned on will also be deleted from iCloud and from any other device connected to iCloud Photos. You can potentially reduce the storage space required on a device by turning on Optimize Storage. See: Set up and use iCloud Photos - Apple Support
Apple does not currently offer cloud-only storage for photos. If that is what you want or need, you may want to explore 3rd party options such as Google Photos or Dropbox.
All of icloud photos downloaded on my phone
