Anyone with iOS or an iPad OS device might want to look into the Paperback app. It’s been a while since I used it, but it was amazing once it was set up. There’s a process to adding sources, and it’s kind of unclear. So you might have to watch a video or whatever. It’s kind of like emulators and roms* in the they don’t want to help you get the content so to speak.
Ya once it’s set up properly you basically have an unlimited library of every comic book, with a slick UI.
It’s basically like setting up a repository if I remember correctly. I think there’s manga centric sources and American centric sources. So you have to choose your source accordingly. I remember being confused for about 20 minutes trying to get it to work, but I eventually found a walk though to something.