Recently found this poster and trailer for a 2019 Chinese billiards movie called "Metal Billiard" (or "Alloy Billiards") about a dude who shoots pool with a metal arm. Trailer looks entertaining, though subtitles would help 
Have found snippets online, but looking for any knowledge of film and for full movie to watch.
Have found snippets online, but looking for any knowledge of film and for full movie to watch.