I relapsed yesterday and I don't want to tell anyone
Why don't you want to tell people?
I don't want them to be angry
Struggling with bad habits happens to everyone. Keeping it away from those that can help you will lead to more addiction. You should try to get help instead.
I don't need help. I was only having fun and I will start again tomorrow.
I'm glad that you're still gonna try again tomorrow, but you really should find some help to kick your bad habits. There's nothing wrong with looking into professional help.