I know what you mean. I liked Rhaenyra the most until her night with Daemon and later Ser Cvckton (this dweeb taking out his bitter insecurities on kids now). Until then she was easy to root for. But came off as spoilt princess since then a bit. And now she is older even if her husband is gay, why openly cheat and father your kids with the Lord of the city watch, wtf lol..
Young Alicent was fully good character that was easy to sympathise for. She feels betrayed and bitter now (her father taught her real politiks and to be more realist ), I hope they aren't trying to make her to a Cersei. Most likely not, Cersei was evil from her first scene lol.
Maybe the kids will grow into those more easy to root for characters (Rhaenyras oldest, Jaecarys, will most likely be the Robb or Jon of the show). GOT world tends be more grey so I'm fine with it. Even if we rooted for Starks as the underdogs, not all their actions were likeable.
We are supposed to root for Targeryans this time around. Tho hard to make them underdog when they have friggin dragons (holy shit that scene with Laena....why did she do that? Was she bleeding out?). Upcoming civil war its gonna be the greens (alicent faction) vs Targeryans (minus her kid Aegon). We are supposed to understand both sides, but most likely most will root for the Targ side. Unless some more heinous shit happens.
Aegons younger brother, Aemond, might turn out to be interesting with extra motivation with a tough childhood. They already established Aegon seems like a useless Joffrey type. So Aemond who might have the bullied childhood of future villains in first episode, might be extra motivated to stand out.