^You missed one.
Oddly enough, no matter what anyone says about it, the movie still exists.
Oddly enough, no matter what anyone says about it, a sequel existing does not mean it fits into the original story, nor does it mean I have to include it with a viewing of the trilogy, hence the word trilogy.
“Original story” is a weird phrasing to use considering it’s not one coherent narrative and actually three separate stories but okay.
It’s three episodic stories that make up a whole story of sorts, despite subtle errors in continuity. That story very clearly ended in the third installment, thus a fourth installment is out of place chronologically.