Controversial Opinion - You're Not Looking for Readers, You're Looking for Friends
I keep seeing a lot of the same kind of posts coming up, people crashing out because they have a low reader count or because no one is responding to them in the vast ocean of fics. I do get it, even if I've been really lucky to writer in large fandoms, I've also had a lot of fics that just get no traction whatsoever despite me being really proud of the efforts. It's oftentimes a luck of the draw as much as skill and fandom, and posting a niche fanfic topic in the middle of a dozen popular pieces updating at the same time is as harsh as posting in a dead fandom that gets two readers and an AI spam bot once a week.
That being said, I think there's a lot of people who are looking less for readers and more for fellow fans to talk to at all.
Fandom circles are fragmented, with a lot of traditional fanbases spread out between tumblr circles, subreddits, bluskies, discords, and a myriad of other places. Trying to find like-minded fans is a huge pain in the ass between access and shuffling through a dozen algorithmic semi-anonymous sources that make following specific people difficult. Adding to that, places like Tiktok and X have additional subsections of fandom that are just mean and can be incredibly judgemental about the dumbest shit.
The easiest place you can find the fans who are looking for your exact preferences and interests in fandom tends to be Archive of Our Own. Unfortunately, due to the archival nature of said place, there's not message boards or a one-on-one comment exchange. Instead, you have fanfics and hoping someone will respond to your fanfic with the hopes that you can find someone who's both safe and fun to talk about, thanks to them co-signing to the idea that Blorbo McGee would be a powerbottom and a mafia boss in the same universe.
Unfortunately, this also means you're at the whims of comments and other fans for finding your people. And getting nothing or getting only bots designed to make you hate yourself and quit makes it suck hard trying to keep going.
The advice 'just write for yourself' doesn't help, since you're writing for yourself but you're also writing to find people who want to hang out. It's not just about the story anymore, it's about putting an open letter to community and hoping that the respondents are kind creatives, and it feels like an insult when no one answers the call.
I wish I had more to offer on what to do about this. I know tumblr started up communities recently, and there are subreddits for bigger fandoms but some of those subs can be really judgemental. At the same time, not reaching out to other fans in any way besides throwing a book into the void with a note saying PLEASE TALK TO ME, I'M LONELY doesn't help at all. I guess the only thought I can think of is try to reach out in your fandom not just through Ao3. Look up the tumblrs and usernames of the writers you like, contact them not just because of their fanfic but because you want to talk to them. The hobby is easier when it's not the only onus to make a fandom friend.