Really Interesting topic and discussions happening here, thought I'd jump in. ^^
I was born 1988 in Sweden so that makes me 37 going on 38. So I was a kid during the 90's and I were sort of a tom boy because I was into computers and gaming rather than going to parties, had most male friends going into my teens and university etc, had internet early and we had Macintosh in the household from 1986 to 2016. So I was on the early internet a lot, forums, local Swedish ones, safe places, going on the BIG internet, like .com websites where only for "adults" and for info gathering or finding international fics (started with Tomb Raider fan fics back then by some reason??)
As an aspiring artist I moved on into being "semi-big" on Deviantart. That place was wonderful, only nice constructive feedback, genuine friendships forming and a sort of collective, let's improve our game by collaboration.
Today, I am looking for a place with the old internet feel. I want natural conversations to happen, genuine interest in character, fandoming around OC's and that type of thing. Sadly, every platform so far except maybe AO3 is about monetizing on your book, locking "good" or sellable content behind paywalls. This creates this wall between content creator and reader which I don't like. But that's been going on in the fandom / creator world online since the shift from forums/tumblr to twitter/patreon, like around the mid 2010's.
Tried Wattpad and AO3 from recommendation of an avid reader friend of mine, but it feels just dead, noisy and crowded with content.
Liking Tapas the best so far, still got that feel that you can bump your story with engagement and promoting on forums etc, instead of just having a big following on social media. That I approve 
What I notice here on Tapas though (I'm still very new here) is that hardly any readers comment?? I got 3 comments so far on 57 chapters but a fairly high engagement. 2 out of those are from a person I know personally. My chapters don’t get many likes either.
Back in 2010 on Deviant art, usually 10 views converted into one like. In my head. 30 or so into one comment. I still use that as a metric for if people actually like and are passionate about what you’re doing.
As of today I got nothing, it leaves me in this weird state of talking into an empty room, a one way conversation when I’m actually this social introvert that crave’s one on one interactions.
Is it because doom scrolling apps forces people into patterns of fast food consumption and stopping to think what you actually just read and commenting breaks the flow of that. Or are people just that shy and don’t want to seem opinionated? Can’t wrap my head around it!
Regarding covers. YEP it matters a lot to me. ( I read 70% novels 30% comics)
I’m very biased to the quality of the cover in terms of:
Selling the mood of your work, hints at what type of genre, easy reading vs complex darker themes and characters. It doesn’t need to be the best quality, just catch my attention or hook me into the unique selling point of the story.
But usually on the community page the quality is all over the place, 90% anime covers on the paywall page, and I’m not into that so I usually just ignore those that look “plastic”, assuming they’re full of tropes and I’ve read enough tropes in my youth, I’m on the hunt for something more rule breaking and interesting, unique and Inspiring!
This became a weird philosophical rant. But anyway. Interesting topic! I got so much to say about feminism, this incel culture and anti woke thing spreading like poison on the internets and among kids, but that would stray too much from the OP’s original query.
I tried not to digress too much, but I probably did. 