https://readcomiconline.li/ has pretty much everything you’d probably need, just use ublock origin on firefox because it’s ad hell.

The Kotatsu app on Android is mainly geared towards manga, but there’s still a lot of non-Japanese comics.

Amber.

Interested as well

not a big comic book reader, but the few that I wanted, I was able to find them on https://getcomics.org

They are just jpgs compressed in .cbr (rar or zip) files, so I just unpack and treat them like jpgs.

If you’re on android you can download Mihon (https://mihon.app/) and then install the Keiyoushi extension/repo (https://keiyoushi.github.io/). It has a bunch of comic sources you can look for. It’s been great for Manga on my e-reader, but I know there’s a lot of comics available there, too.

I have downloaded a total of one (non-manga) comic from there, but MyAnonamouse (private tracker for ebooks and audiobooks) has a decent few and it’s easy to join with just a quick interview–much less gatekeepy than most private trackers. Just read through the rules and requirements on the invite page and you’ll be fine.

If you’re a homeserver nerd, you can set up a Komga service and then use an app like Tachiyomi for reading from your library. A bit involved if you’ve only got a few things, but the time investment really pays off if you’ve got a big library.