The problem with Star Wars is that it's really, REALLY hard to recapture the magic of the original trilogy. There really is a kind of magic to them that's hard to consistently reproduce.
I'm not so sure about that, tbh.
Movies like Ghostbusters, the Star Wars trilogy or Back to the Future managed to capture lightning in a bottle and that can't be outdone, but it's not impossible to make a movie that at least comes close, I would argue.
The charm of Star Wars is that it's a fairy tale about a farmboy who gets dragged into a massive adventure where he becomes a big hero. And the special effects and the designs make this all look epic and amazing. There's so much new stuff at every corner. We see "wretched hives of villainous scum", we see perfectly clean corridors in imperial Stardestroyers, we see desert wastelands, we see an ice planet, dungeons, lairs, a city in the clouds, massive space stations and every place is filled to the brim with unique and striking characters.
Even though Stormtroopers are not exactly "unique" when it comes to them individually, but their design and the sheer mass of storm troopers makes them memorable.
At it's core, Star Wars wants to be a very basic story with very basic morals and very basic storytelling, but this simplicity is what makes it stick. The irony is: By not trying to make it too openly political, the morals become applicable to pretty much everyone. People picked up the "Jedi way", since it isn't weighed down by heavy-handed social commentary.
Compare that all to the sequels. We see barely anything new, it's all just variations on things we've seen in the past. It essentially tries to hamfist some harebrained "Nazis are bad and dumb, m'kay" message into the plot.
There is no imagination, no sense of wonder. It's just going through the motions of being Star Wars by throwing certain tropes on the screen and going "Here's an X-Wing, that's totally Star Wars, right?" without any substance to it.
The long and short of it is: It's almost impossible to outdo the originals, but it's not impossible to make something good that holds up to the originals. The problem is, that Disney did it all wrong. They weren't bold and brave when they should have been and they were outright ignorant and short-sighted everywhere else.
They had a really cynical, dispassionate approach and it shows. No wonder, there's no charm in these new movies, they aren't being done by people who are really invested in them.