YOU SAID:

I am really not having a good time.

INTO JAPANESE

私は本当に楽しい時間を過ごしていません。

BACK INTO ENGLISH

I have not really had a good time.

INTO JAPANESE

私は本当に楽しい時間がありませんでした。

BACK INTO ENGLISH

I had no really good time.

INTO JAPANESE

とっても楽しかった

BACK INTO ENGLISH

I had a really good time.

INTO JAPANESE

とっても楽しかった

BACK INTO ENGLISH

I had a really good time.