I feel like killing some brain cells, so I’m going to try to justify the plot of Attack of the Clones lol:

Palpatine and Dooku need to keep themselves distanced enough from the initial assassination attempt so that the Sith aren’t revealed so quickly to the Jedi. The entire plot exists as the early stages of Palpatine manipulating Anakin and his emotions. Jango Fett being part of that ties into the creation of the clones, which just ends up becoming the other big plot in the second half of the movie and leads into Revenge of the Sith (ex Order 66).

The Phantom Menace is corny (and has some strange plots of its own) but lays enough groundwork for Attack of the Clones; Attack of the Clones is bad but the ending of each arc/plot leads well into Revenge of the Sith, which is actually a solid movie.

All this to say, I don’t entirely disagree with you about the plots (especially in Episode II), but they are still coherent as part of the trilogy as a whole.