I recently started playing Divinity Original Sin 2, and I went through this problem as well until I changed the way I approached the game.
I just let go of trying to make the most optimized decisions and instead just make the decision I, or my character would make (if I’m role playing).
I just realized that no matter what decision I make, it will still lead me to finish the game. If I really want to, later I can go back and play it again to see more of the game. Only if I like my first play-through though.