The issues with Prequal Trilogy "PT" and the Sequel Trilogy "ST" are totally different and affect my enjoyment it two totally different ways.
Firstly, the PT failed in the actual execution, the "movie making" if you will, and was very interesting from a story perspective. Hell, look at all of the quality content we were able to extract from it. The PT's main failing had to do with George Lucas pushing new technology over story-telling, bad and clunky dialogue (which the original Star Wars had, as well), poor pacing and story plotting and, most importantly, bad acting. The actual storyline is good and set the stage for so many quality stories and motives. In fact, the PT storyline, I would argue, is much broader and opened up Star Wars, creatively, in a much larger way than even the OT.
Now, the ST is much better made (well The Force Awakens and The Last Jedi--- I could never bring myself to see The Rise of Skywalker) than ANY of the PT. The ST has a very, very, very large problem---- the story SUCKS. There is no motive, no real theme, characters change their motivations several times mid-film and then change back in the next film. The Villain is unoriginal and the story is redundant. In short, it absolutely fails the narrative test. There really isn't an overarching theme or story board. ABSOLUTELY the worst aspect of the ST is that, instead of building on the OT and the PT, it actively seeks to disparage its source material. It changes lore, it reduces characters that we have known since childhood to unrecognizable tropes (the same Luke who threw his lightsaber aside and declared he would rather die than join the dark side, has a nightmare and proceeds to try and murder his nephew....... ????? really?)
So to conclude, you can easily criticize both the ST and the PT --- but, in my opinion, for two completely different and distinct reasons. One, the PT, is an unrecognized hulk of content which was later mined successfully by others, including Dave Filoni. It contained some scenes of pure brilliance but was mostly marred by technical film making blips and bad acting. On the other hand, you have the ST, which is absolutely superbly made, and a piece of shit, story-wise. So you have an uncut gem and a polished turd. Therein lies the difference.
Give me the uncut gem everyday....