I've been in your shoes and I honestly felt that way about my comic series. It's actually one of the many reasons why I held off on starting to produce pages. I felt that it wasn't exactly how I had envisioned, but I really wanted to get it out there. However, I wanted to get it printed and hopefully get it into some comic stores. I felt that the story I had was too important to mess up by rushing into it.
It's inevitable as an artist to change over time. It is extremely likely that you'll eventually look at your first chapter and cringe a things. It's part of the journey as an artist. I'd say most of us look back at our own work and cringe. But, at the same time you think "Wow! Look how far I've come so far!".
Don't tell yourself you're not good enough to get it published. Because, honestly you never really know what's going to happen. Artwork makes it pleasing to the eye, but if your story is solid and interesting, you have more than you think. Because, you can have the most beautiful artwork, but unless you have a solid story, you have nothing. Artwork will only get you so far with comic books.
I don't have a publisher for mine, I'm completely independent. Started it to design and write it when I was 17, but held off on producing the final artwork to get it printed until I was 28 (although I have a draft comic done at the age of 17 of it. It's absolutely terrible!!!) . However, now it's printed and it's in some comic stores and an art gallery.
My suggestion is to make sure you have a solid story and just keep working on your artwork, if you feel like it's not where you wanted it to be. It's not a race. We all progress at different speeds. As for publishing, it's 2020, if you want to publish, you can publish. But, save a lot of money, it's not cheap.