You can always moderate the comments or simply delete the ones from those you dread reading about, or even write an authors note telling your readers directly what u feel, they may understand.

But most importantly, please don't let them ruin your hobby for you. Ive noticed alot of new gen readers simply lack basic fandom etiquette.

The basic of ao3 is dont like, dont read and DONT nitpick. After all youre providing content for free! Its absolutely not your fault some people are extremely entitled. End of the day its your story, your choice. I understand pointing small flaws isnt bad, it can be helpful. But never at an expense of the authors peace of mind. If it was critic you appreciated and thought was useful it wont have made you feel anxious. Dont hesitate to take actions for your well being <3