YOU SAID:
my cat couldn't sleep, so i hugged it.
INTO JAPANESE
私の猫は寝ることができなかったので、私はそれを抱きしめました。
BACK INTO ENGLISH
My cat could not sleep, so I embraced it.
INTO JAPANESE
私の猫は眠れませんでしたので、私はそれを受け入れました。
BACK INTO ENGLISH
My cat did not sleep, so I accepted it.
INTO JAPANESE
私の猫は寝なかったので、私はそれを受け入れた。
BACK INTO ENGLISH
My cat did not sleep, so I accepted it.
That didn't even make that much sense in English.