It was absolutely amazing, very different from the books but that means it encourages people to read the books!
Although the movie does hint towards harmful behavior and thoughts it's not that bad, pretty meaningful if anything. (Maybe avoid letting super young kids watch alone.)
Not to mention it gave me a good laugh in some sections! And the LGBTQ+ relationship is really sweet and helps the character development a tad.
Although the book is always better than the movie, they did pretty decent considering that this movie was passed from blue sky's to another animation company. A must watch! Even if your an adult!