Loved the original sw, empire was worthy if flawed (just how long was luke on dagoba??), the others i have no love for. Jedi ruined one of the greatest movie villains of all time, the prequals (aside from a few scenes) were bland and uninspiring. The empire was defeated by ewoks. Rouge one was good but again wasnt “new” so much as simply taking the one successful theme (the death star) and expanding on it.
loved the original alien, and aliens, while a different genre, was also well done and a good movie... went deeply down hill from there.
There is a franchise not mentioned that i can recomended in its entirety: the men in black franchise. All three movies were well done. Good mix of action, a certain self aware humor, good interaction between tommy lee jones and will smith, the plots were coherent and well excecuted... and all three held up.
Just one mans opinion, your results may vary.