^ This so much. Another similar (and equally harmful) kind of advice I often seen thrown around is "if your comic isn't doing well enough on Tapas/Webtoon, then it probably means that you have to work harder to improve it/chase the current trend/put in colors/change or simplify your style/whatever", when truth is... maybe the problem has nothing to do with the quality of the work itself and everything to do with the fact that neither platform is actually "right" for you? Let's be honest, both Tapas and Webtoon have a clear preference towards some very specific styles/genres.
Anyone who doesn't fit in is hardly going to get a recommendation on the homepage of these sites, no matter how good or professional their work is. I've seen plenty of amazingly done webcomics with downright professional artwork and storytelling getting little to no attention here. Yet you constantly see people saying that "if they aren't making it big, perhaps they should work harder". Hell, no. Just because your comic isn't doing well on two (2) online platforms that have a tendency to promote a very specific kind of subgenre, it doesn't mean that your work is objectively bad or that it can't achieve success elsewhere.
Does it suck that the two major webcomic platforms won't give a crap about your work? Yes, it does. Does it suck to pour your soul into something and see it getting zero attention because it doesn't fit what's "popular"? YES, IT DOES. But does it mean that you should suffer through burnout to "improve your work" to chase something that may never happen (e.g. a homepage feature) or give up on everything you love to chase the "current popular style", hoping that will let you achieve success? NOPE.
Start branching out, try different platforms, build connections elsewhere, join collectives, heck, make your own website if you can afford to. Hone your skills and work on improving them, because yes, there's ALWAYS room for improvement, but for the love of everything that's holy, stop promoting the idea that "not making it big" on this or that platform means that you're not "working hard enough". Because another key part of success is "being in the right place at the right time"... and if you keep wasting all your time and energy on the wrong target/audience, it won't matter how "hard" you work: you will always feel out of place.
tl;dr: hard work is just one of the steps to achieve success. Being in the right place at the right time, knowing your audience, finding your niche, building connections and yes, LUCK (plenty of luck, tbh), are also important. So don't just waste your energy trying to chase an audience you can't have and focus on finding a place/working method/audience that works for YOU.