I'm thinking that my sanity may be fading away
Why do you think that? How are you feeling?
I don't know, trolling online is the only thing that makes me feel normal.
Purposefully trolling someone online is never right, you should stop doing that. I would recommend you talk to someone professional about your issue with your sanity and how you think it's fading away. Maybe start with your friends and families to try and see if they can monitor you, where if there is any instances that they think you're losing your mind.
Ok, I can try that.
That's good. Think of how much better you will feel when you are able to get control of your life back!