YOU SAID:

This is a stupid game and i don't understand why i'm doing this.

INTO JAPANESE

これは愚かなゲームであり、なぜこれをしているのか理解できません。

BACK INTO ENGLISH

This is a silly game and I can not understand why I do this.

INTO JAPANESE

これは愚かなゲームであり、なぜこれをしたのか理解できません。

BACK INTO ENGLISH

This is a foolish game and I can not understand why I did this.

INTO JAPANESE

これはばかげたゲームであり、なぜこれをしたのか理解できません。

BACK INTO ENGLISH

This is a silly game and I can not understand why I did this.

INTO JAPANESE

これは愚かなゲームであり、なぜこれをしたのか理解できません。

BACK INTO ENGLISH

This is a foolish game and I can not understand why I did this.

INTO JAPANESE

これはばかげたゲームであり、なぜこれをしたのか理解できません。

BACK INTO ENGLISH

This is a silly game and I can not understand why I did this.