It’s actually hard for me to find big things to actively dislike in the story of TLJ despite my nitpicks.
I like what they did with Luke’s character
I like the message of Canto Bight
I like the flawed leadership of Holdo
I like the arcs of pretty much every character

It’s just that there is too much in this movie, even with a 2.5 hour runtime, and nothing gets room to breathe or even get fully explored. Combine this with its overall tonal issues and it feels like I’m a stone being thrown across the surface of a lake, never slowing down enough to become immersed in the world.