YOU SAID:
how did you mess up that badly
INTO JAPANESE
どうやってそれをひどく台無しにしたのか
BACK INTO ENGLISH
How did you screw it up so badly?
INTO JAPANESE
どうしてそんなにひどく台無しにしたの?
BACK INTO ENGLISH
Why did you mess it up so badly?
INTO JAPANESE
なぜそんなにひどく台無しにしたのですか?
BACK INTO ENGLISH
Why did you mess it up so badly?
You should move to Japan!