@Aspie_Gamer we hate to see you in the current state that you are so maybe our response will help some. We're going to try to say something different from everyone else. What no one has mentioned is that your situation is shared by many comic creators. Many creators outright fail. They try something, it doesn't work, they give up, and what they did ceases to exist. Most never see it. Most never talk about their failures even though failure is a very common result in life.
Here is our failure:
In 2015 we tried something big with a publisher and we put five figures of marketing behind it because we had such passion and faith in the project. It was a niche project but that didn't matter to us because we thought that hard work would overcome all odds. Guess what? It flopped majorly. The publisher went bankrupt three weeks into the ad campaign and all that money we spent was a 100% loss.
So there you go.
What makes webcomic success look and feel like there is an easy button is the fact that all you are seeing on LINE Webtoons are the success stories. What you don't see is the rubble of the many failed dreams webcomic platforms are built atop. Here's an example. The city of Cologne, Germany has been built atop successive civilizations. In 1941, when digging an air raid shelter, construction workers found an amazing Roman mosaic floor believed to be from 200 AD. The floor is so stunning they built an entire museum around it.
So, how could such a great piece of art get buried under 20 feet of rubble? If that isn't failure, what is?
Many creators are struggling to find an audience just like you. Those that seem immensely successful right away likely already had an audience established when they launched their series.
Because you are starting from scratch it's going to be a 5+ year struggle. We're only 2 years in and have had to spend a significant amount of money advertising our series in order to get to where we are, which isn't all much. If you don't have the money for marketing then it's going to really be difficult to take off. A webcomic is a book. Books are sold almost extensively through word of mouth. At first its going to be very slow but as you gain more and more readers and those readers start to talk about your series then you will gain even more readers. It's like a snowball rolling downhill until it eventually becomes an avalanche. A huge amount of patience is required with webcomics in order to succeed.
Now for some things others have mentioned:
You've painted yourself into a corner with your series by becoming too niche. That's not to say that your series won't eventually succeed, but you've made it incredibly more difficult. As others have pointed out, the art is such that it makes the reading experience very difficult. Success stories like Order of the Stick, Homestuck and One Punch prove that art isn't that important as long as you provide something else for readers to latch on to. What all of those stories had that made them so successful in spite of their art was they had characters or stories that readers could relate to.
In your series the main character is someone many readers can't identify with. If the series had great art then you probably could get away with your main character being hard to connect with, but you can't ask readers to give up both. The story is also too niche. You are asking English readers to mentally go to Japan and wrap their minds around things like honorifics and reading backwards (right-to-left). OEM (original English manga) is a tough sell. Many North American manga readers consider any manga created outside of Japan as automatically rubbish. This is partly due to one company (to remain unnamed) flooding the market in the 2000s with exceptionally low quality OEM. So many readers were burned that they've been forever turned off to the genre.
Consequently, you've created such a super niche series that you essentially diluted your readership down to a select few.
Think of a successful webcomic as an airplane. You need two wings to fly. There are only three wings to pick from.
Wing 1: Artwork (lighting, proportions, character design, background, shading/color, lettering, etc.)
Wing 2: Characters (personalities, motivations, relatable, etc.)
Wing 3: Story (beginning/middle/end, location, plot, punch line for "gag-a-day", etc.)
Our recommendation would be to focus on one wing a time. Wing 1 is the hardest by far because it takes years and years of craft. Instead focus on Wing 2 and Wing 3. Many popular gag-a-days do great at those. You could make your series a gag-a-day with the main character as you desire and all the other characters as people readers can relate to and tell jokes that are relevant to what they did growing up or to popular media. Order of the Stick told D&D/fantasy jokes that the readers understood and when you strung all the gags together it made a larger story line. It went on to do a $1.2M Kickstarter.
If you want a hard core serious story then our recommendation is to go with a light novel. A Certain Magical Index had as little as six interior illustrations plus a cover per volume. Seven illustrations is a small enough amount to make it affordable for you to hire a professional artist. That will get you one wing. Then all you need to do is craft an excellent manuscript with either a killer story or characters that grab readers... or better yet, both! Then you can post it to Tapas and start to achieve the goals you have set for yourself.
Lastly, don't blame readers for not reading your series at this point in time. Everyone only has 24 hours in a day and after eating, working, and sleeping there isn't a lot on disposable time remaining out of those 24. You are competing against blockbuster movies and video games for a reader's precious time. You have to give them more in return for their time. A free series isn't enough because there's an almost endless amount of free content available on YouTube alone not to mention LINE and Tapas. Wow them with art, grab them with an unshakable story, or make them feel like a part of the action with a character who they can step into.
Good luck and hang in there. It's not easy for 95% of us.