There’s also a bookclub for graded readers and parallel texts! If you find the manga and books in the absolute beginner bookclub too difficult, graded readers are a really nice first step into reading, since they’re scaled for foreign learners.
Matcha Travel Magazine has an Easy Japanese section that has a bunch of short articles. I like that they sometimes explain more complicated Japanese words in simpler Japanese right after the word occurs.
If you’re having troubles finding books, and don’t mind reading ebooks, I suggest signing up for an amazon.co.jp account and either buying individual Kindle books there, or signing up for Kindle Unlimited. There’s no shortage of things to read, at all levels, using that approach.
Signing up for an amazon.co.jp account is pretty simple – Amazon already has an English UI for their Japanese site, and you just need to provide any Japanese address (e.g. use a hotel address or something).
Well, again, it’s always a good idea to check the preview. Some books will have furigana on everything and/or be written for a younger audience. Some books will be written with clear, straightforward sentences, other… not so much.
That removes a lot of the uncertainty