you're gonna take this as ego stroking, but i wanna make it clear that your webcomic doesnt suck. i looked through your profile a lil to find anywhere you linked to your comic, and it seems like youre really struggling with a low opinion of your art - theres room for improvement, but i dont think anything about your comic fully sucks, man.
the main thing is you havent given yourself any kind of chance. you have 407 views, and only an opening sequence out - of course you havent had high engagement. its very unlikely that from the first sequence youll ever get a rush of engagement, and you cant pay attention to it. dont let yourself care about the views and subs until a chapter in.
but since youre going to reboot, lets go into what you could do better next time:
1: this opening sequence, that should all be one episode. or released in a few episodes in the same week. the problem is people are gonna come to your comic, see you only have your opening page/s, and no matter how intrigued they are theres nothing for them to stay for yet. this opening sequence you have has a nice flow, it deserves to be enjoyed as one.
2: similarly, your schedule was too slow, and too unpredictable. you posted twice a month, then skipped december, once in january, no particular day of the week to post or timeframe to speak of. dont beat yourself up about this (seriously, it sounds like you beat yourself up way too much. i feel u, i do too, but the more you externalise that the more you believe it), every beginner struggles with scheduling, especially when theyre demotivated.
what you need is a good solid buffer - get your entire first chapter made before you even consider posting, and then post in an orderly basis (id recommend starting weekly, slowing down later if need be, and starting with a larger episode at the beginning) as you can keep building the buffer as sporadically as you like in your own time, so long as you dont run out. some of the pages i post are three months old by the time they come out, and i can go two or three weeks without drawing anything if i feel like shit, or im too busy, and its all fine.
3: your lettering feels amateur. imo, the font is fine, but your bubbles arent. your placement and sizing is often cramped, your tails are at odd angles, sometimes your bubble order fucks with the flow (not often though, so feel proud tbh, typically someone at your stage has bubbles fuxxing w the flow aaaall over the place. some pros do this all the time, too) this is a really good post on lettering, very helpful.
your sound effects are pixelated and weird. you should try hand drawing them, or at least get a wider variety of fonts to choose from. if you look around, there are lots of really fun fonts in the creative commons.
theres a wider issue that your lettering being so digital, when your art is clearly traditional, is jarring. im not sure what the solution to that is - a higher effort solution could be to cut out the speech bubbles in paper and scan the pages with them tacked on. prague race often does this, and it looks great.
4: in terms of your art... honestly, its fine. its really fine. its well scanned, but i think you need to edit it digitally to take away that overwhelming grey. the watercolour could be tighter in places as well, and i think you could improve your contrast to make things more striking. but really, to improve your art i just recommend the usual continuous practice and drawing from life. youre good, man. id recommend checking out alison bechdel's comics, she works in ink, watercolour, and limited palettes - her stuff is simplistic and works well, you could find some inspiration from it.
on the flipside, your style isnt one most people find appealing - its all the little lines, especially on the people, its grim and grotty in a way thats really great, but not as widely appealing as other styles. this shouldnt make you change your style, stay true to what you like and what suits the story. but if your comic isnt so popular, that might be part of it. again, you honestly shouldnt care about that.
in terms of writing... theres not enough to say yet. but this scene flows, it raises a lot of questions to keep people reading. the third person thing is weird, but i think it also makes me curious.
honestly, man, theres nothing here that makes me think this comic sucks. im not interested in it, because theres not enough to be interested in yet, and the lettering combined with grey scanning gives an unprofessional feel. it looks like you might have a really interesting concept driving it, the blue at the end certainly is striking. i wish you the best of luck with your reboot, ill be keeping an eye out for it on the forums. dont beat yourself up.