The anime of Tokyo Ghoul sometimes simplifies or speeds up the plot compared to the manga. The character development might also feel rushed in the anime.
In my opinion, the Tokyo Ghoul manga has its advantages. It often offers more depth and allows for a slower pace to explore the characters and plot. However, the anime can bring the story to life with its animation and voice acting.
There were some differences between Tokyo ghoul manga and anime. In the manga, the protagonist Kim Mu-yan was a high school student who had an accident during a physical education exam with her classmates before she was forced to become a ghoul. After turning into a ghoul, he tried to find a way to escape and prevent the appearance of other ghouls. In the anime, before the protagonist Kim Mu-yan became a ghoul, she took a physical examination with her classmates and had an accident in the competition. After turning into a ghoul, he tried to find a way to escape and prevent the appearance of other ghouls. Compared to the manga, the plot in the anime was more compact and the process of Kimki Yan's transformation was more detailed.
It depends on personal preferences. Some people might think Tokyo Ghoul is better for its original story and character development. Others might prefer Tokyo Ghoul:Re for its continuation and new plot twists.
The Tokyo Ghoul manga is better because it has more detailed world-building and allows for a slower pace to absorb the complex themes. The anime may cut out or simplify certain plot points to fit the time constraints.