I did a bad deed yesterday
What was the reason behind it?
I don't feel I can tell you.
There may have been a good reason for it, but doing something called a bad deed is obviously going to be bad to most people. They may think that you are a bad person if you continue to do bad deeds like this.
You don't understand the reason I did it, and i don't feel like talking about the story
This sounds serious, and I hope that you are able to make it through whatever you're dealing with. I am here to talk and listen about what you've done if you want to chat about it.