I agree with Ailyne, I'm sad to know you feel this way
I am honestly also very surprised your comic isn't more popular; your art is super nice, and I love the mix of comedy and serious plot (but then, I'm also biased because I'm a fan Go read Oshi's comic!!).
To answer the question, yes, I almost gave up my comic around chapter 7. It was so difficult and time consuming for me to draw even a single panel and even then I wasn't satisfied with how it looked. I also felt it affected my storytelling because I was leaving out scenes that to me were important, but I didn't have the skill to draw them properly. What I did was to take a 2-month break from the comic, go over the previous chapters and take note of everything I didn't like (composition, anatomy, stiffness, coloring, etc), categorized them on which aspects were more critical, and then I focused only on improving them. I bought some books about comics, took a few Udemy courses on digital drawing, and did studies. It was super useful, and although I still have a lot to improve, now I feel that now I can represent better what's on my mind.
That being said, I don't know about keeping the audience interested. How this happens is a mystery to me :S The typical advice I read here on the forum is to have updates that are long enough for something to happen, leaving questions in the author's note section, besides having an easily readable text, scroll format for mobile users, etc, but you do all that. I don't know what's keeping people for commenting, maybe your readers are shy?