"Zack Snyder says that he is not interested in making anymore comic book adaptations at the moment, but does know a few he would like to do." https://screenrant.com/zack-snyder-comic-book-movie-future-plans-response
"It's been revealed that Zack Snyder's Justice League will end on a cliffhanger that's likely to never be resolved, but it's a necessary evil." https://screenrant.com/justice-league-zack-snyder-cliffhanger-no-sequel-why
While it's understandable that ZS isn't interested in doing any more comic book movies in the near future, he certainly has quite a unique way in depicting such characters.
https://screenrant.com/dc-movies-after-justice-league-snyder-cut-release-dates
Both of these movie series are good in their own ways. One can find faults in any of them.
https://thedigitallabyrinth.blogspot.com/search?q=comic+book+movies