books in 4th grade

I think that books that I read in 4th grade isn't very interesting. When my reading level got higher and higher, Books are more boring and more boring for me. However, there are some books that I really wanted to read it when I first saw it. Sometimes, I missed 2th & 3th grade, books are very interesting. I loves to read books that are below my level. However, I can't read books that are below my level in 4th grade, but I can read them in free reading.