Allo there,
Users get one name change at this time. Bungie may add more in the future but for now you can't change your username.
Please see Bungie's [url=https://help.bungie.net/hc/en-us/articles/7648312251284-Bungie-Name-Guide?_ga=2.203020824.889820463.1660081325-556190839.1657624416]Name Change Guide[/url] for additional information on Bungie Name changes
We have only ever been given one name change since the Bungie Name system was introduced a few years ago.
There are no plans for further name changes at the current time