YOU SAID:

I can't figure out why translations and parties do not work out for me.

INTO JAPANESE

彼がなぜそれをしたのか理解できない。

BACK INTO ENGLISH

I can't figure out why he did it.

INTO JAPANESE

彼がなぜそれをしたのか理解できない。

BACK INTO ENGLISH

I can't figure out why he did it.