iCloud storage
for icloud storage amount deducted but storage not upgraded. I paid ₹749 for 2TB but not not updated.
iPhone 7, iOS 15
Question marked as
If you thought that buying iCloud Storage would magically increase the amount of space on your iPhone, you were mistaken. Once purchased, the memory on iPhone is fixed and can never be made larger. All you did was purchase more space in iCloud to sync more data with. And you may not have needed the 2TB iCloud option at all.
Read here to better understand --> What's the difference between device storage and iCloud storage? - Apple Support
If you are low in memory on your iPhone, you have to delete things you don't need or use, which can include: Apps, Music, Photos, Files, Email, Messages, etc.