While it’s usually just the first few chapters that are free, Pixiv has free stuff for days.
https://comic.pixiv.net/recent_updates
This can sometimes be harder to find in native stuff, since even young native kids inherently know a lot of grammar already. Extra hard if funds are tight, leaving you unable to buy material aimed at language learners at this time.
The Beginner Book Club is also going through a story book, and most of it is available for free. Since it has a book club, people will be asking question and having discussions about the content, so if you have questions, you can pose them there, or they may have already been covered.
Not free, but has been getting some recommendations is: