Look, there are avenues, but I'd be lying if I said I wasn't super wary about it. The official market for translated hentai ebooks is shockingly sparse, so a lot of folks end up wandering into the murkier corners of the web. I've stumbled across a few dedicated aggregator sites—you know the type, where the layout looks like it hasn't changed since 2008—that host fan-translated doujinshi in PDF or CBZ format. The quality is a total crapshoot; one page will be pristine, the next will have garbled text.
Honestly, my best finds have been on certain forums where people share links privately after vetting new members. It's a bit of a process, but it feels safer than clicking random download buttons surrounded by a million pop-ups. Even then, I mostly stick to reading synopses there and then try to hunt down the original Japanese release to support the circle, if I can afford the import shipping. The whole thing feels like a weird, guilty treasure hunt.