And definitely don't sweat your choices. There's do-overs, and redemptions, and characters will give you second chances so you don't fall out of there path by accident.There are a lot of AVNs like that, some are oversimplified, like just "yes" and "no" as options to close or open a path, but the light of my life is a little more complicated, there is a hidden score behind each character, you have to say the right things at the right time, that's why people sometimes drops a "where is da fking walkthrough!?".The first thing you need to understand is the lore, the MC's older daughter is on bad terms with him and the trio is depressed and financially and emotionally broken - so you must choose carefully each choice to build trust to finally pop up a "yes" and "no" choice.
Don't try to sus out what the "desired" response is, act like a natural human being. You're not getting locked out of a lewd scene just because you said the soup was too salty, and conversely you're not getting laid just because you said that dress looked nice.