I get like that too. Someone recently asked to see something I'd written and I was nervous but I decided to give it a try since people are always going on about important feedback is and oh isn't it a shame to write but never have anyone read it. They didn't have a single nice thing to say. I'm not that broken up about it since they also said they aren't in the fandom but it was annoying.
Re: me being insecure about my fics