Apparently when getting married it isn’t quite as easy as I was thinking. But depending on your country it might be slightly easier

If you’re just changing your name without getting married there’s a lot of paperwork, you have to stand in front of a judge, then you have to change all your banking information and everything else that had your previous name on it. And so help you god if you lose that paperwork that says you changed your name if you happen to need it years later it’s a huge issue. It’s a lot of work to change your name.

Changing your name is an insane amount of work and it is not worth it