How would you use the power to slow down time, but it only affects you and noone else?

To create a pocket dimension where I can’t hear the sounds clearly intended to annoy me/keep me awake or otherwise bully me for absolutely no reason, completely unprovoked. I wish they would leave me alone since I’ve done nothing wrong and I’m quiet like they want me to be. It just makes me hate him more. They should stop. But I know it doesn’t matter to him how I feel about him. He doesn’t care, he will get what he wants. I just wish they wouldn’t bother me like that or in any other way. What the fuck can I do about it?