Riot change name - How to Change Your Riot Games ID and Tagline

You log in using the username that you used to create your account.

The latter can be either randomized or changed upto 5 characters.

Therefore, if you want to change your gamer tag on any such game, say Valorant, you'll have to edit the username on your Riot Games account.

All you have to do is make sure that the combination of these two fields is unique.

Changing the tag will usually allow you to keep the name portion intact.

Not only complaining on Reddit, this guy also shared that he wrote a series of letters to Riot in the hope that they would allow him to keep this name.