Just got my first hate comment today. But hey, it's a part of being a fanfiction writer right? I take this as a sign to just always fight more so I can become strong enough to not be affected by these things. It's a journey but I'm here to go through it.
Remember that haters don't know your story, they don't know what goes on in your mind. They shouldn't be able to judge without knowing but they still do. Know that you have supporters knowing what you're doing is good.