I'm upset with my friends with how they treated my suicide attempt
How did they treat the suicide attempt that made you upset with them?
They say my life afterward should become better not worse.
These people are not your friends if they were saying that as a joke. These people will dragging you down in life if you continue to see them as your friends.
Maybe I'll get rid of them
You really should consider getting rid of them and finding friends that will be there for you when you need them. If you can't count on your friends for support, then they're not worth having.