YOU SAID:

I have not a care in the world.

INTO JAPANESE

世界に気にしないがあります。

BACK INTO ENGLISH

I have no cares in the world.

INTO JAPANESE

私は、世界には苦労もあります。

BACK INTO ENGLISH

I struggle to the world.

INTO JAPANESE

世界に必死します。

BACK INTO ENGLISH

Desperate world.

INTO JAPANESE

絶望的な世界。

BACK INTO ENGLISH

Desperate world.