I post my comics on five platforms:
Instagram: As much as I bloody hate the algorithm, that's where most of my followers come from due to its colossal userbase which makes it easy to redirect random people I encounter IRL to.
Twitter: I don't get nearly as much engagement there since I can't figure out how to promote myself there. I still have my 2nd highest follower count on the platform nevertheless.
Webtoon: While it's the biggest webcomic platform out there, it's the unfriendly one in terms of community. There's no way for users to directly interact with each other or a forum which makes it hard to communicate with fellow creators. I know there're Discord servers, but I prefer the structure of traditional internet message boards. Plus, their search engine sucks, hiding the results for my comic unless you search for it on the Canvas section. Thanks a bunch for shooing away potential future readers /s.
Tapas: My favorite webcomic site by far. The traction here started with the same meager numbers as Webtoon, but as I've been increasingly active on the forums here, I've managed to build up a larger readership in a short amount of time. It also has the best moderation team that's timely and reliable with their responses.
Dilllyhub: It's like Webtoon and Tapas and contains many great features. However, since no one uses it, it just serves as a place for me to archive my comics.
Global Comix looks like a tempting option, but it's already tiresome enough to post my content in 5 places at once.