Full transparency: I'm still figuring this out as I go. I've never produced a webcomic before, and I didn't expect ALOMO to take off like it did (yes, I know how cliche this sounds, but it's the god-honest truth). I guess there's just a high demand for new Ben 10 content [cough Cartoon Network cough]
So, with my eight months of experience, my only advice is to:
A) Cast a wide net: Don't limit yourself to one social media platform. Although most of my followers are on Twitter, that hasn't stopped me from posting on other socials like Tumblr and Instagram. Not everyone is on the former Bird app.
B) Try to keep your audience updated on your progress whenever possible. This can help build hype around the comic, as it usually means it's getting another step closer to your next release. This is why I post preview images leading up to the next episode drop. It also has the added benefit of allowing me to show off Jayy's artwork outside of the Webtoon, which helps attract new readers to my socials and the series because it's just so good.
Sorry, I can't give better advice right now as I'm still a novice. If you ask me this question again in a year or two, I'd happily give you more helpful info.