Gourav ji, BPHS carries that level of knowledge and dictums that I am no one to comment on that, as Deepanshu Sir said BPHS is so deep that from a single shlok of BPHS a whole new book can be written. I understand your situation you are new to astrology and you don’t know from where to start and whom to trust that’s why you asked this question, do one thing read BPHS and try it by yourself instead of asking others, BPHS is Bhagwad Gita of astrology 🙏🏻