YOU SAID:

I am the best at everything in the world.

INTO JAPANESE

私は世界中で最高の人間です。

BACK INTO ENGLISH

I am the best person in the world.

INTO JAPANESE

私は世界一です。

BACK INTO ENGLISH

I am the best in the world.

INTO JAPANESE

私は世界で最高の私です。

BACK INTO ENGLISH

I am the best me in the world.

INTO JAPANESE

私は世界で最高の私です。

BACK INTO ENGLISH

I am the best me in the world.