How do you say "I hope you had a good day"
I can kind of say this but I always end of mispronouncing something -.- and I'm Korean! This is crazy........

Question

Answer

오늘 좋은 하루 보냈으면 좋겠어요

OR

오늘 하루 잘 보냈으면 좋겠어요

Answer

(오늘)좋은 하루 보냈길 바래요.
End of the day, you would say.

"I hope you have a good day"
"오늘 좋은 하루 보내요"
You would say in the morning.