I think the incest taboo brings a inherent sexual tension that's hard to replicate with no-related characters. The will-I-won't-I in real life doesn't hit the same in a game, but being related adds that.
I use a walkthrough mod when available. Burned too many times by seemingly random decisions resulting in missed scenes, and I'm not someone to play the same game over and over to get all the endings.
If there's no story, then you could just fap to porn. If there's not enough sex, you could just read a book. There's needs to be a balance between narrative and spice.
I was on f95 for years, but after games get disappearing I went hunting for alts. And here I am.
Still use f95 for filters and mainstream games, but don't lurk there.
And if you're trying to get Activity Coins, chatting with people You must be registered for see element. seems to be the best way. But I'm new and might be wrong.