@Alanna To be honest, I haven’t read many books, and among the few I have, none really featured a prologue (as far as I remember). Actually, I'm more of a movie person!
But I do agree with you that prologues can sometimes feel confusing, and because of that, a lot of people would want to skip them to get to the main story.
That said, I’ve used prologues in two of my stories for a specific reason.
Both are inspired by Indian epics (Shri Ramayana and, Mahabharat/Shri Mad Bhagwat Geeta), which form the core idea of the narratives.
I structured the prologues to connect directly with the final plot twist. When readers reach the climax, looking back at the prologue helps them unlock the secrets and deeper layers of the story—like the first piece of a puzzle that makes sense only when the whole picture is complete.