I'm going out of my way to help people but no one came to help me this time.
Did you ask for help before? I am sorry you couldn't find anyone.
Look, I'm not doing this for me. When the times are right, it's also my turn to be helped!
It's understandable that you would expect others to help you when you have been helpful to them. However, you should not expect other people to be like you and do what you do. Instead, consider not being someone who gives too much as it will leave you feeling empty.
Maybe I should stop doing that.
I am sorry things didn't work out but you can expect others to always help you. Sometimes things just don't work out. Just don't let what happened burn you and make you callous.