Right, but worth noting that raw beef, for example, contains a lot more nutrients than cooked beef[1], and includes most of the essential vitamins you would need to live.
Other parts of the animal, like the liver, would provide sources for A and B12, etc.
> Because of its content in highly valuable
> nutrients such as iron, zinc, selenium, fatty
> acids, and vitamins, meat is a unique and
> necessary food for the human diet in order
> to secure a long and healthy life, without
> nutritional deficiencies.[2]
Other parts of the animal, like the liver, would provide sources for A and B12, etc.
[1]: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2621....[2]: https://www.sciencedirect.com/science/article/abs/pii/S03091...