So, I thin the actor was Jim Carrey. I can’t remember the name of the movie but have watched it over 10 years or so ago, I thing. It basically was when Jim, ac the MC, was living his life without realizing he was actually in a popular TV show. Everybody else was an actor and knew they were actors, except him. He slowly comes to realize his whole life was a lie.
casspir Answered question Jul 17, 2020
“The Truman Show” (1998)
https://www.imdb.com/title/tt0120382/
Quote from the above IMDb page:
“An insurance salesman discovers his whole life is actually a reality TV show.”
Jim Carrey plays in the movie.
I am pretty sure this is the movie you are looking for. If you agree, then please select my answer as Best Answer by clicking on the “Select” button.
casspir Edited answer Jul 17, 2020