Review Detail of DaoistD1ToKX in Earth's Greatest Magus

Hi. Could you guys give me a heads up about the story with spoilers if possible . To tell the truth I've already dropped it 2 times, I think the limit was around somewhere chapter 450. I would like to give a chance again because I kind of liked it, the world building is awesome but couldn't stand the MC. He is from a medieval world with modern world simp norms, it's just doesn't make any sense. The girls...I don't understand. He is surrounded with so many good girls but wasting all the potential. My questions are. Will he change in a good way? For example the MC will be more confident and decisive .will it be a harem, polygamy story or not? I would prefer the latter because the Author knows how to create good heroines but MC 😅😅 All in all my intention is not criticism because I have all the respect who writes these amazing stories I'm just trying to find out that is it for me or not . Thanks