IMBD is your friend.
Nic Cage's acting roles for 2019-2021.
Prisoners of the Ghostland
The Croods: A New Age (he probably recorded his VO for this in 2017 or 2018)
The Color Out of Space
A Score to Settle
As I said to Laura a few days ago, "Just because you haven't seen the project doesn't mean the artist isn't working."
In comparison, Harrison Ford has 15 acting credits in the last decade. 2 of those Star Wars VII and IX, two were for Star Wars video games, and three of those "credits" are for deleted scenes added to the 2011 Blu-ray collection of Star Wars 1-VI. No one would say "What happened to Harrison Ford," but Nic Cage works more than Harrison... A lot more. Cage has 43 acting credits in the last decade, none of them for 30-year old work.