YOU SAID:

I can’t seem to sleep no matter how tired I am

INTO JAPANESE

どんなに疲れていても眠れないようです

BACK INTO ENGLISH

I do not seem to be able to sleep no matter how tired I am

INTO JAPANESE

私はどんなに疲れていても眠れないようです

BACK INTO ENGLISH

I do not seem to be able to sleep no matter how tired I am