Okay, so I read your first three chapters as you requested, and I can offer you a few suggestions for areas of improvement and point out some things that would turn me off as a reader that may be acting as a hurdle to you getting subscribers.
1 - Right off the bat, in your prologue episode, I spotted at least two typos. It's a minor thing, but it screams at the reader that you, the author, can't be bothered to spellcheck/proofread your own work. So if you can't be bothered, why should the reader? Obviously you care, but that is kind of the vibe that it gives off when there are easily-fixable spelling errors. If you aren't confident in your spelling abilities, or English isn't your first language, I recommend either getting someone to proofread it for you, or using something like Grammarly or the spellcheck in your word processing program, then copying and pasting the text from your word document into your art program, rather than retyping it in your art program, to help avoid typos.
2 - The prologue is confusing to me as a reader. At first I thought the overlaying narration was the internal monologue of a character, but with all the shifting scenes and locations and characters in the very long introduction sequence, I wasn't sure who the main character was or why I should have any kind of emotional investment in this overly-dramatic prose-heavy narration.
Then I found out, OH! It's not an internal monologue, it's a writer who is writing a book, and even he thinks it's a little cringe! But in that case, I think his cringey writing went on a little too long. It goes on long enough that the reader is going to think that the entire comic is going to have this melodramatic prose feel to it, which it doesn't. Once you get into chapter one, the comic is actually kind of goofy and a little slapstick-y, so the prologue feels very out of place, and that alone is probably losing you readers. Anyone who likes the melodramatic prose-heavy intro will not enjoy the sitcom/romcom/goofy story, and anyone who likes the sitcom/romcom/goofy story is going to read this very long intro and think, "Well this isn't for me!" And they're going to leave. Your prologue should have the same vibe as the rest of your comic, because it's the reader's first impression of the story, and should set the stage for what they should expect out of the rest of the series.
Also, when it was revealed that the writer was actually just typing up this narration that was almost the entire first chapter, my initial thought was that he was writing fiction, and that none of what he was typing for his book actually happened to him. It wasn't until later that I realized that his mopey novel writing was about something that actually did happen to him. It's a level of disconnect that is just confusing enough to turn off new readers.
3 - Your backgrounds are... rough. I love that you are taking the time to draw plenty of backgrounds and adding a decent amount of detail and believability to your scenes, but it's very clear that there is a lack of understanding of fundamental perspective rules. For example, in this background scene...
...all those lines you are using to indicate windows should be converging at the same vanishing point off in the distance. And if you're using one-point perspective, which it looks like you're going for in this shot, your vertical lines should all be parallel, not at an angle.
I really recommend studying how perspective works in order to strengthen your backgrounds. Because the fast that you are drawing so many backgrounds at all is great, and that puts you a mile ahead of other beginner comic artists who avoid drawing backgrounds at all costs! But you need to know how to draw things accurately in perspective to clearly convey your ideas.
4 - Speaking of backgrounds, you have some points where things get weirdly pixelated. Spots like this...
...around the edges of the yield sign and the bridge in the background, you have these white pixel gaps. And places where you use this cobblestone texture...
...that is maaaaad pixelation. It's very off-putting to the eyes. If you're using pre-created assets like patterns or shapes, make sure they're at a high enough resolution that they won't get this angular distortion, because it's difficult to look at.
And on a similar note, I think you might want to consider toning down your use of pre-generated patterns and textures, it can be a little clash-y sometimes. For example, in this sequence...
...you've got like five different patterns and textures going on. It's a lot for the eyes to process, and distracts from the characters, which should be the focus of the art. Keeping backgrounds simple and clean can actually be a difficult thing to train yourself to do, and learning to be okay with some empty fields of color is tricky, but it's in the service of maintaining clarity and making sure your characters stand out. Your backgrounds should support the character art, not distract from it.
5 - From another clarity standpoint... You use a lot of fonts. A lot of fonts. In your second episode, I count 8 or 9 fonts that are not SFX fonts. It's a bit much, and is kind of distracting when a reader is just trying to soak in the story. Good dialogue lettering should almost be unnoticeable, it shouldn't really catch your attention. I do like that you use the typewriter font to indicate the novel text of the guy writing his book, against the more traditional hand-lettering font for the rest of the dialogue, but it should be consistently that way. Only use the typewriter font for the novel, and only use the hand-lettering font for the dialogue and internal narration, so the reader instantly knows what they're reading and what the context is.
6 - Finally, and this may just be a personal choice, but when your comic went to stick figures, my brain completely checked out. Stylizing/simplifying or "chibi-ing" your characters for the sake of humor is great and fun, but reducing it to stick figures is a step too remotely disconnected from the rest of your art. While it may not be your intention to come across this way, when I saw the stick figures, my brain immediately said, "Oh, this artist was too lazy to draw this scene properly." I'm sure that is in no way what you were going for, and I'm not suggesting that you were being lazy, but that's what my brain (and I'm sure other people's brains) thinks when I see that.
So, I know this seems like a lot, but hopefully this can help you focus your efforts and intentions towards more deliberate and clear choices going forward. Definitely keep going and keep working, the best way to get better at drawing comics is to keep drawing comics!