I’d say you’re exactly the target of the Absolute Beginner Book Club (ABBC):
If you’re willing to learn grammar as you go, you can join in the current ABBC book, or pick up a prior ABBC book or manga. All the old threads are there, with a lot of grammar discussion, and you can still ask questions if they’re not already covered.
I’ve read almost 80 manga volumes across 24 different series, and the easiest manga thus far has been レンタルおにいちゃん. (Even after accounting for my improved reading ability, grammar knowledge, and vocabulary over time.) We previously read the first volume in the ABBC, and I’m running an offshoot club for the last three volumes.