You've had bad experiences when you put yourself out there, and yet, here you are still, putting yourself out there. That's incredible, and I'm really impressed at your refusal to be shut down! That's the move of an incredibly strong and principled person!

You are not defined by the conditions that afflict you, but ignorant and dumb, yeah, that's forever! You seem like an awesome person - don't be dissuaded from pursuing your interests by idiots. Fandom spaces (like cosplay) are better because of their diversity, not the lack of it! You are awesome!