YOU SAID:

I forgot what my name is

INTO JAPANESE

私の名前があるを忘れた

BACK INTO ENGLISH

My name is forgotten

INTO JAPANESE

私の名前を忘れてください。

BACK INTO ENGLISH

Forget my name.

INTO JAPANESE

俺の名前だ

BACK INTO ENGLISH

My name.

INTO JAPANESE

俺の名前だ

BACK INTO ENGLISH

My name.