Unable to use Icloud Memory when iphone memory is full
I am using iphone 6s 32gb, My iphone memory is 31gb full however I have Icloud package of 50gb where in I have used 20gb and 30gb space is free but I am still getting error message that iphone memory is full and am also not able to use or move the phone data to Icloud. Per my understanding buying 50gb Icloud pack makes total of 82gb memory but am not able to use it.
iPhone 6s, iOS 13