Change Xbox name?

How can you change your name on Xbox? So not the gamertag but the name that is next to the gamertag. Who knows what i mean

You probably mean your normal name.

You can change it to https://www.microsoft.com/...com/de-de/ via your account, for example.

Alternatively, you can do this in the Xbox settings of your console (if you have a console)

Here you can go directly to your profile:

https://account.microsoft.com/...m/profile/