Political thought

Hello, I have read your analyses of the form of government and democracy several times and enjoyed them very much. Lately I have been trying to learn and formulate a position on these matters, and I wanted to ask if there are any in-depth books that you could recommend (I have read 'The Open Society and Its Enemies' and 'The Federalist'). I prefer books that analyze the philosophy of government and less the implementation (but not exactly). In particular, I would be happy if there was a book that presents the fundamental problems in an orderly manner and discusses the various attempts to deal with them and the difficulties in them (for example, in this context I really enjoyed the book Truth and Unstable, which presents the fundamental problems of the issue and discusses the various proposals and their failures in a theoretical and in-depth manner).
Thank you very much!