YOU SAID:

I don't wanna do homework

INTO JAPANESE

宿題をしたくないです。

BACK INTO ENGLISH

Don't want to do your homework.

INTO JAPANESE

あなたの宿題をしたくない。

BACK INTO ENGLISH

I do not want to do your homework.

INTO JAPANESE

私はあなたの宿題をしたくありません。

BACK INTO ENGLISH

I do not want to do your homework.