hey man thank thank you so much for following my stuff I always see your likes on IG 

(also it's a one man project at this point
)
As for popularity on IG or any other platform nowadays, well ...I'm gonna be honest, it's all down to luck
.
Personally most of the success of the comic was from going viral on imgur at the very beginning (since then all my posts there have been a disaster...), webtoons took notice and put it as a recommended pick, and from there things pretty much snowballed, some anime featuring IG account kept posting it and the followcount grew from there...
You can try to pay a couple of those account for a feature (some are pretty cheap, like 4$ a post), although, it doesn't mean it'll connect with their audiences. The same post (on similar sized accounts) can get 40k likes on one and 3k on the other so once again no way to predict anything, much less who's gonna actively follow your account.
As pessimistic as it sounds unless you have thousands of dollar per month to spend on ads it's almost impossible to increase your visibility in a meaningful way, and even with 50k+ followers in less than 6 months I can't say that my situation has really improved financially or otherwise, just doing my best so that webtoon senpai can notice me and give me one of those sweet sweet contracts
.
My only advice would be that if you're a webcomics artist just post your whole comic on any platform you can find. Behind the scenes, sketches or character art aren't cutting it anymore (unless you're REALLY REALLY good), and the fact that my Instagram account is solely for that purpose makes it stand out a bit, and engagement remains pretty high; around 20% (while ig average is around 2-7%).
So yeah treat IG as your mainhub and you might reap some exposure out of it.
But unfortunately it's a rough world out there for original content creators and we're all at the mercy of algorithms and the people who pick what's gonna work for their platform the best. There are no ways left to game the system...I myself still have no idea how any of it works or how I got where I am, I can only focus on my work, which I already have so many insecurities about, and I probably wouldn't be able to deal with obsessing over numbers if I just kept looking at IG or webtoons stats all the time.
So yeah that's my experience so far...to make it short organic reach is almost dead on all platform unless you get lucky, we're all fucked...
Sorry If I brought very little to the conversation....
I'll try to be diligent and monitor this conversation, so if any of you have questions just go ahead!
cheers

!