Emperor Palpatine’s resurrection in Star Wars: The Rise of Skywalker hurt the sequel trilogy and Star Wars overall more than anything in the prequels ever did. The Star Wars sequel trilogy has proven divisive for a myriad of reasons; some audiences believed there wasn’t enough focus on the original heroes, particularly Luke Skywalker, Leia Organa, and Han Solo, while others felt that new characters like Finn, Poe Dameron, and Rose Tico were unfairly sidelined. Many also agree that Star Wars: The Force Awakens, though it had promising potential, was a rehash of the original Star Wars film.
https://screenrant.com/star-wars-rise-skywalker-palpatine-return-mistake-prequels/