Why cant I leave my public profile

https://preview.redd.it/c5d0d39yoslg1.png?width=565&format=png&auto=webp&s=b140e54797b23fd8974c7190e0dcb47e80881591

So I didn't know I'd be unable to change my name, or that this would be linked to my account with almost 0 options for editing it and now I can't leave the profile.