Imagine your teacher gives you a book to read and tells you that everything written inside is true and good. But, when you read the book, you find some things that you don't agree with or understand. This is similar to what some people feel when they read the Quran, which is a holy book for Muslims.
Some people criticize the Quran because they don't understand some of its teachings or because they don't agree with them. For example, some people criticize the Quran for its teachings on women and their rights, while others criticize it for its teachings on violence and war.
Critics of the Quran may also argue that the book contradicts itself or that some of the stories and teachings are not factually accurate. They may also question the way the Quran was written and preserved throughout history, arguing that it may have been altered or edited by people over time.
However, it's important to understand that there are many different interpretations of the Quran, and what one person may see as a flaw or inconsistency, another may see as a deeper or metaphorical meaning. Muslims believe that the Quran is the word of God, and therefore they hold it in deep reverence and respect, despite any criticisms that may exist.