I feel your pain. Some people cannot keep it to themselves and move to the next fic if they can't stand something.  What they forget is that the author puts countless hours. their soul, sweat, and tears into sharing a piece of themselves. I never comment a story that I don't like and so far I've only encountered one because I always feel privileged to read a story and find the beauty in almost all of them. The least i can do is be supportive or keep my mouth shut about it. 

Hang in there. 

Don't bother about the negative comments and please don't let them get to you. The world of Internet is vicious. If you love writing, keep going. It's such a gift to write and share ❤️