My biggest problems with the sequels are the lack of explanations for things, the lack of lore. Why we had a not empire who basically were the empire, not sith who were sith, and a not rebellion who were the rebellion.
The total lack of connective tissue between Last Jedi and Rise of Skywalker. Who and why were the first order, what happened to the republic, the jedi. Nothing was explained. They dropped us into the sequels without any explanation as to what had happened in 30 years. Luke had a redemptive arc but we never saw his fall. We also never got to see Han and Leia happy as a family, the republic restored or Luke teaching anyone.