In general, I think every learner feels this at various stages of their learning. At this point I’ve read two books and several volumes of manga, and I still run into sentences where I know all the words and grammar and still can’t make sense of the sentence. This happens less and less as I read more, but it does still happen.
My advice for you:
- Make sure you have a decent foundation in grammar. I’m all for reading early, but if you know too little grammar, it can be a real struggle. In my opinion, it’s best to have a strong understanding of the N5 grammar points, as well as some understanding of at least the most common N4 grammar points before trying to read too much.
- If what you’re reading is too hard, try something easier. Maybe a graded reader (though I have no experience with those). You want to find that sweet spot where you’re challenging yourself, but where you don’t want to bash your head against the wall.
- Join one of the book clubs here on WaniKani. These are basically support systems for reading, where we all help each other out when we run into sentences we don’t understand. As long as you’re willing to ask questions, people will always be there to help.
- Most importantly, keep reading. Regardless of what approach you choose (from my above suggestions or otherwise), the best way to improve is with practice.