phone storage how
sir,
my phone storage is full can you help me how to manage or other options
Welcome, Nikitaapple, to Apple Support Communities!
Look at Settings->General->iPhone storage. That gives you some options to reduce storage consumption.
Please see How to check the storage on your iPhone, iPad, and iPod touch - Apple Support.
In addition to the above, you will, almost certainly, need to follow the instructions in the document Clear Other storage on your iPhone or iPad - Apple Support, including making sure your iOS is up to date (13.6.1 or later).
Please let us know how this all goes for you, or if you need any additional help!