If I mentioned all of the flaws the movie would fall apart.

Those flaws include adult characters which never seemed relatable. Those characters never related to each other in a way which suggested they were long-time friends who were separated by decades. I've never read the book or watched the first movie, but I never understood why these adults would choose to return to a town they disliked to fight some demonic spirit. The characters never changed. The movie was 160 minutes and the end battle seemed to go on and on. The final scene in the battle was laughably anti-climatic. And there are even more issues I have with the movie.

But I still enjoyed the time. Granted I had zero expectations but it wasn't a bad movie.

The kids saved this movie. They did have chemistry and their motivations and actions were highly relatable.