YOU SAID:

I want to do something with my ball

INTO JAPANESE

私は私のボールで何かをしたいです。

BACK INTO ENGLISH

I want to do something with my balls.

INTO JAPANESE

私は私のボールで何かをしたいと思う。

BACK INTO ENGLISH

I think I want to do something with my balls.

INTO JAPANESE

私は私のボールで何かをやりたいと思います。

BACK INTO ENGLISH

I think I want to do something with my balls.