Rian Johnson should have done the 3rd installment too

But no, fanboins had to ruin that one. TLJ had opened to rave reviews, a far cry from the middling response TROS received from critics. But due to the fanboi rage they pulled Rian Johnson off the job and brought back to the helm the hack that J.J. is, who apparently just winged it.
I read a scathing review in the Irish Times of the supposed loose ends that Rian had left behind that apparently no one else could tie back together (https://www.irishtimes.com/culture/film/star-wars-the-rise-of-skywalker-review-it-s-unworthy-of-the-word-cinema-1.4118711). Well, I bet Rian could had they allowed him to come back. But no, because fanboi.