* Her age and interests: The Queen lived a very public life but was known for her traditional interests and likely wouldn't have been a gamer.
* Privacy: It's also possible that she did play Xbox but kept it private, as she did with many aspects of her personal life.
It's worth noting that the Royal Family has embraced technology in recent years. Prince William has been known to play video games, and Prince Harry has even spoken about his love for Fortnite. However, there's no evidence to suggest the Queen was a gamer.