Pvt, sufiyan_0068

You can change your YouTube description, just make sure that it follows our Community Guidelines. Your description is accessible in the channel header.
YouTube Android app

Tap your profile picture .
Tap View channel on the top.
Under your channel description, tap Edit .
Next to your name, tap Edit  and enter your updated description, then click Save.
YouTube Studio app for Android

Tap your profile picture .
Tap Edit .
Next to your name or description, tap Edit  and enter your updated description