Not... necessarily 
I mean, of course I would not complain if I were able to make it big and solely live off of making comics, but that's not my main goal. Being able to finish this project, possibly print/publish it and having an audience that's invested in the story is what matter the most to me. Which is one of the main reasons I asked about your motivations.
I see that you spent 6k on this story already, and... well, that is quite a lot of money and I understand wanting to see something in return. However, more questions come to mind, at this point:
-Did you have any social media presence before you started this project? Have any other finished projects? Building an audience from scratch is incredibly difficult. Even more so if it's your first project: people don't know who you are yet, they don't know what to expect from you, heck, they don't even know if you're actually going to finish the thing or not! If you take a closer look at a bunch of popular webcomic creators, you'll see that plenty of them: a. have already finished a comic (or more than a comic) in the past; b. have a HUGE social media presence; c. are already popular artists who may be at their first comic, but already built an empire through fan arts and/or just regular art; d. did some other creative project in the past (games, videos, tutorials, animations, whatever).
-Is your comic a long term project? One of the reasons why many creators suggest starting with a smaller project is to test the waters and see how things go. I'd say that this is especially true for comics where you're paying for an artist. You don't want to spend huge amounts of money on a project unless you can afford to spend that much without having anything in return OR you're 100% sure that you're going to get something out of it, as in, when you have a contract, have a successful Kickstarter/Patreon or whatever. If your project isn't working the way you were hoping and you still have a lot more episodes planned, I suggest either cutting it short (find a way to finish the story earlier and move on to a shorter project) or finding a way to get some of that money back (by making a Patreon/Kickstarter). Leaving the comic unfinished may not be a very good idea, because as I said, people like to know what to expect and if they think that you're the type who abandons projects and never finishes them, you'll have a hard time gaining their trust with your next project.
-Last but not least: did you do your research? Marketing a comic (or anything, really) requires study and research. For the bigger numbers, you do need to look into trends, see what's popular on social media, study how each social media works and act accordingly. Simply throwing your money at IG for an ad won't do the trick: you have to make sure that the ad is visually appealing, that it's reaching the right audience, that people can easily find the thing you're trying to promote. Webtoon links are notoriously hard to promote on mobile, since they often tend to open the age verification page and then won't even show you the actual comic page: there's a chance that the great majority of people clicking on your webcomic ad couldn't even access it to begin with. A much less expensive platform for advertising comics would be ComicAd, which lets you post ads on other webcomic sites, which means more exposure to actual webcomic readers, rather than a generic audience.
