This article will take you through how to change your channel name. Please note that you are unable to change your channel name if the name you have entered is already taken by another user.
Changing your channel name via desktop
Select your profile picture at the top right of your screen.
Select Settings.
Select General then Channel, and update your name.
Select Save to complete your changes.
Changing your channel name via the app
Select your profile picture on the top right of the page.
Select Settings.
Select General, then select Channel.
Fill in your updated channel name.
5. Select Save to complete your changes.