Hogwarts Legacy is NON-CANON. Taken directly from the Hogwarts Legacy Website (https://www.hogwartslegacy.com/en-us/faq):
Q: What is J.K. Rowling’s involvement with the game? Is this a new story from J.K. Rowling?
A: J.K. Rowling was not involved in the creation of the game, but as creator of the wizarding world and one of the world’s greatest storytellers, her extraordinary body of writing is the foundation of all projects in the Wizarding World. This is not a new story from J.K. Rowling, however we have collaborated closely with her team on all aspects of the game to ensure it remains in line with the magical experiences fans expect.
Q: How does Hogwarts Legacy fit into the Harry Potter Wizarding World?
A: While Portkey Games are not direct adaptations of the books and films, the games are firmly rooted in the magical universe of the Wizarding World. While remaining true to J.K. Rowling’s original vision, Portkey game developers chart new territory by creating fresh ways for fans to immerse themselves in the Wizarding World.
The key takeaways here are:
"not direct adaptations of the books and films", "remaining true to the VISION" and "ensure it remains in line with the magical experiences fans expect."
This game is officially an AU THAT FOCUSES ON GETTING THE VIBES RIGHT (which it definitely accomplishes), and to stay in line with JKR's request that none of the Harry Potter content becomes a "Harry Potter goes to Las Vegas"/"Harry Potter has a chat with a mormon child" type thing.
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