When you start using TikTok, you’re asked for a profile name and a username. Perhaps you used your real name and were n’t aware at first that your name would be made public.
In TikTok, the username is the one preceded by an @ sign. In TikTok it’s simple to change your profile name or username.
Your username can only be changed once every 30 days, so make sure it’s one you can live with, at least for that period. As a result, anyone who tries to use the older address will no longer see your videos. Then, if you have a verified account and change your username, that account is no longer verified.