John: I feel bad about not helping you with the project.
Phrases Phrases for Expressing Regret
I feel bad about...
B1Meaning
Expressing guilt or sadness about a situation.
Example sentences
Alice: It's alright, I managed to finish it on my own.
John: I still feel terrible about letting you down.
Alice: Don't beat yourself up about it. But please let me know if you are feeling bad about something in the future, I mean, I feel bad about that.