What is sbf? Why do people think you're a pedo?
Listen, I know it's way easier said than done, but try your best not to listen to others online. With the anonymity of the internet and the lack of needing to look people in the eye or be there in person, a lot of people are willing to be nasty and bully others. Think of it as a blessing in disguise that you were banned from a toxic environment. Fuck them. Don't let the shitheads win by doing this to yourself. It's a bigger fuck you to them if you are able to live your life and thrive instead.
Things are especially rough as a teenager. Your brain is going through all of these changes and there are a shitton of new emotions and social social shit running through there. It's overwhelming at times and makes everything feel significant. I promise your brain will stop being this overloaded over time. You just need to hang in there. 14 is a rough as fuck time but you will not feel these things forever. There is a light at the end of the tunnel, man. You just gotta keep walking forward, but don't have to run through the tunnel if that makes sense. Take a rest and care for yourself.