I need help for this iCloud problem: I had no available space left, (of my 50GB plan) so, to keep using iCloud, I deleted some files. After that, instead fixing the problem, the system keep saying that "iCloud storage is full", or "there is no available space left on iCloud". I tried to deleted more files, also my iPhone backup of ~7GB, but iCloud seems not to detect I have done free space, and keep saying that there is no more storage. Has anyone had this issue? Does anyone know how to solve this? Thank you and sorry for my English mistakes because it's not my first language.
Apple now has a web interface to view and manage (some of) your storage.
I would go there and verify that the web interface matches the iOS device. If so, then you can go to the photo library and purge the Recently Deleted or work through the options given here:
From your screen shot, you might need to download documents from iCloud Drive, but worst case, you will have followed the latest cleanup steps if you need to reach out to iCloud support to have them look at the code that checks free space and validate it against the lower numbers you are being shown on your Mac.
Apple also provides free support for accounts like AppleID and iCloud so you can get personalized help from: