Modern Poker Theory as mentioned by the other reply is good. I'd also suggest Play Optimal Poker by Andrew Brokos. The former outlines a lot of strategy in the game and talks a little about game theory and its implications. The latter gives less direct poker advice but uses "toy games" that share some similarities with poker but are simplified to demonstrate some of the implications that game theory has on poker. It does contain some direct poker advice but it's more of a book to teach you how to think properly about how game theory applies to poker and how you can use that to study with something like a solver and actually understand what you're seeing. I would suggest you pick up both, I think that the Brokos book assumes you know certain poker terms and doesn't contain a glossary whereas modern poker theory is almost like a textbook and has a section where it defines all of the terms it uses. Modern poker theory will have more actionable advice but the Brokos book is excellent to teach you how to think about game theory and requires more self-reflection and has more questions to the reader.
Applications of no limit by Janda or mathematics of poker are recommended by a different reply here. I would caution that these are extremely academic and extremely dense texts that would be a very tough read for a newer player. Mathematics is less practical and more of a math book than a poker book and applications is Janda showing how to work out solver-like solutions before solvers existed and also contains a lot of math. I think the other two above are more practical and aren't going to lead you to put the book down a 10th of the way through.
Applications of no limit by Janda or mathematics of poker are recommended by a different reply here. I would caution that these are extremely academic and extremely dense texts that would be a very tough read for a newer player. Mathematics is less practical and more of a math book than a poker book and applications is Janda showing how to work out solver-like solutions before solvers existed and also contains a lot of math. I think the other two above are more practical and aren't going to lead you to put the book down a 10th of the way through.