I use Kavita. I edit the metadata in either Calibre, comictagger, or ComicRack (deprecated) first depending on whether it’s a book or a comic.
You might also consider Komga, but I was never able to get it set up correctly on Windows so I can’t directly compare the two.
Yeah, I got GTA V free from Epic years ago and it was so frustrating to have to deal with 3 layers of DRM (Epic launcher, Rockstar launcher, and Social Club) that I just pirated it. Fuck that.