Sign in to YouTube in your browser, click your profile picture in the top-right corner, and select 'YouTube Studio' from the dropdown menu.

Navigate to the 'Customization' section from the left-hand menu, then go to the 'Basic info' tab to view your channel details.

Locate your channel name, click the pencil icon next to it, and type in your desired new name in the provided text box.

Double-check the spelling and formatting of your new name to ensure it aligns with your branding or preferences.

Click 'Publish' to save your changes, noting that updates may take a few minutes to reflect across the platform.