Echoing what others said: the TNG movies felt like long, bigger episodes. While this isn’t a bad thing, it didnt have the finality and “oomph” of the TOS movies.
THEY felt like they had big stakes, which carried from movie to movie, and at least for 2-4 (and 6), they picked up the character abd story arcs.
The TNG movies treated each as a standalone story, which again, isn’t a bad thing, but the episodic reset button was no good when you had the epic story of the TOS films.
Of all of the TNG movies, First Contact had it, but honestly Nemesis was the one that tried to bring it and completely squandered that feeling of “this can change the entire galaxy and tie to threads from the series.” I always felt like there was actually a better movie in there, left on the cutting room floor.
Nemesis I felt could have been a much better film with better writing and direction. There’s certainly good stuff hiding in it, the whole nature vs nurture argument for example.
But it didn’t feel really earned. I feel like a Reman enemy or a Romulan captain that Picard faced in TNG would have been better. Hell, bring back Denise Crosby as Sela; her plotting to take over the Romulan Star Empire would have made sense.