The over-arching plot of the prequels is perfectly fine, they were just so badly written and put to film. Lucas evidently just didn't take those films seriously. A cash grab, or he was lost without the Dune books for guidance, I dunno. The only thing they had going for them were Maul and Leeson, after that there was nothing of interest, zip, nada.
For me Andor & Rogue One are the true prequels and the only Star Wars content that matters outside the original trilogy (+kotor). They actually make the original movies better, which is about as high a praise as you can hope for in a prequel. Andor S1 one is imo one of the best TV seasons ever put to screen, not just in Star Wars or the Sci-Fi genre. I'll be shocked if they can keep to the same standard in S2, but one can hope.
Rogue one has its flaws for sure, but its still great and again... improved by Andor, expectantly more so as S2 will flow directly into it. Just a shame they didn't get Gilroy from the beginning.