Can't delete iCloud photos; Shared Albums are disabled

mohanad153 wrote: …i can’t delete photos from iCloud because of shared albums i

This does not say Shared Albums, but rather it refers to your Shared Library. A Shared Library would be very difficult to maintain on 5 GB of iCloud strorage. Are you sure you need a Shared Library?

It's not clear what you are wanting to do. Do you want to delete a few pictures? Do you want to turn off iCloud Photos? You must see that you are pushing the iCloud storage to the max, and it may be getting hard to handle.

You should read about Shared Libraries here:

How to use iCloud Shared Photo Library on iPhone or iPad - Apple Support

mohanad153 wrote: I just want to delete all photos from iCloud I have device storage now

Then you should just turn off iCloud Photos. Go to Settings>[name]>iCloud>Photos to see this:

and turn off iCloud Photos.

If you have Optimize iPhone Storage checked, the you may not have all your pictures fully on your phone. In that case you will be asked if you want to download all your pictures-- say "yes."

I've never heard of Shared Albums interfering with deleting photos from iCloud. Could you show us a screenshot of the message that says your have to disable it first?

Also, could you tell us what device you are using and what version of the system it is running?