Am I a cyber bully? :(?

I think all the stress and everything just built up. I don't think you are a cyber bully. You didn't mean what you said. If you were sick of it and didn't know what to do, that's understandable. I was like that once, but I talked to my school councellor and it got sorted out. :) Maybe you could do that. But just send a few more apology letters and talk to your councellor and parents. They'll help. I and don't think you're a cyber bully :) Best of luck and hope this helps :)