YOU SAID:

If we all tried hard, I'm sure it would have been more fun to have a good day

INTO JAPANESE

みんなで頑張れば、きっともっと楽しい一日になっただろう

BACK INTO ENGLISH

If we all worked hard, it would have been a much more enjoyable day.

INTO JAPANESE

私たち全員が一生懸命働いていたら、もっと楽しい一日になったでしょう。

BACK INTO ENGLISH

If we all worked hard, it would have been a much more enjoyable day.