As I already said elsewhere, I thought it was good. Not great, but still a solid ending to the new trilogy nonetheless. The main criticism I'd have for Rise of the Skywalker is that it plays everything safe, after The Last Jedi actually did something new and interesting with the series. All three films in this new trilogy have their problems, but overall I still like them all. At least they washed away some of the bad taste that the prequels left me with.
TLJ was an absolutely abysmal movie in every single way. Comedy was hamfisted, villains turned into caricatures, derivative use of cute animals. It wasn't just a bad star wars, it was a bad movie in any universe. There's a scene where a drunk little mister moneybags alien is feeding coins into BB at a casino, and then later BB SAVES EVERYONE FROM A PACK OF ARMED GUARDS BY FIRING THE COINS OUT AT THEM.
This movie is just as awful as gremlins 2, twice as long, and half as entertaining.