The only good thing about the prequels was Palpatine.
Though in defence of some of the dialogue, Anakin is an awkward teenager/early twenties guy with all the power in the world, thrust into adult institutions and bureaucratic barriers while sexually overcharged inside a celibate monks' order.
Him being awkward, retarded, and eventually just flipping is entirely in character and absolutely believable. A cool, smart Anakin wouldn't fall to the dark side in the first place.
In this regard, the prequels' failure is sort of built in. Anakin was written right for the character he was supposed to be. But Anakin's character wasn't what people wanted to see. He's a mirror of edgy teenagers bitching about being told to do their chores and disappearing into isekai fantasies, but people don't want to look into the mirror, they just want the cool fantasy. They want to project themselves into Luke or maybe Vader, not Anakin.
And thus the whole fantasy falls apart.
Him flipping from "I want to safe my girlfriend, nyo" to murdering kids in the span of a minute was still too much, mind. That could've been set up better.