I'm currently having a similar experience in WotR.
Charisma classes are very hard to play in this game for someone new to the Pathfinder ruleset, so I rerolled as an Assassin (easiest class to play, massive damage output), focusing on Long Bows.
Upside: fights are now easy to understand, no struggling with massively underpowered spells (are they serious about only doing 1D4 damage with a damage cast?).
Downside: intense problems with the story because of lack of persuasion and, in this case, also arcane knowledge. Party members are not that helpful, either.
I think game designers need to reconsider this aspect of RPGs. We need some tools to allow for a more "diverse" experience in games, not just "either fight well or talk well".
Which is also why I prefer playing the Warlock in BG3... Charisma opens the story and enables player agency.
