Wow, thank you for taking the time to write such a detailed answer! This helps a lot! Especially all your tips to make characters feel more fleshed out and interesting. I definitely agree that as real people are complex, so should be fictional characters.
I have heard about plot structures in literature study classes, which I am sure is useful in some way, but I am more interested by your perspective as a writer. I don't know how to make those structures "come to life", so to say. So yeah, I think I'd like it if you expanded a bit more on the 5-act structure. Thank you again! :>