There were likely hundreds of actors who interviewed for the role of Screech on "Saved By The Bell." Here are several AI-generated videos of Dustin Diamond interviewing for the role of Screech.
In the first two videos, Screech repeatedly yells "Zoinks!" in an incredibly annoying manner:
In this video, the show's producer gets annoyed and belches in Diamond's face during the audition:
In this video, the show's producer farts repeatedly in Diamond's face to test how Diamond responds with "Zoinks!"
*** Update ***
Someone posted a link to a pitch book which Dustin Diamond prepared in an attempt to secure a role as "Shaggy" in the 2002 live-action "Scooby-Doo" movie. Here are pages from the pitch book. I wonder how Dustin Diamond's audition went - did he say "Zoinks!" so many times that the producers got annoyed and kicked him out?
