icloud storage confusion
A few days ago I was using my phone's camera and received a message of some kind saying my iCloud backup was full and the photos couldn't be stored. I didn't have time right then to address it. Later I deleted some photos, and on my MacBook I deleted some documents from iCloud, since they might have been shared on the phone. Just now I looked at iCloud storage in the phone's settings, and it says I've only used 1.5 gb out of 5. Could deleting a few photos make that much difference? Is everything OK now, or should I follow some of the suggestions on the support site about iCloud storage issues?
iPhone SE