I don't feel like going anymore.
Oh no, did something happen? What will happen to the crowd where you used to play?
They will notice my absence pretty soon, I think
While it is okay to decide not to want to attend an event, you should still give notice to the people who were expecting you to attend. People will consider you to be rude and flaky if you don't tell them in advance that you aren't going to show up.
I'm currently in a emotional distress, it's hard for me to be there.
I am sorry you are going through something but you should make sure to tell others. If you talk to someone they might be able to help you work through your issues. I hope you feel better soon.