I believe Cessna 172,152,… are very very different than large airplanes like A320,B737 or even CRJ-x
and you can check Adam’s comment here about single engine props
That been said, is there anyway for someone to get an introductory flight, or at least sit inside a cockpit of a larger airplane (while flying definitely) before starting any training ? because Cessna or any single engine propeller is not the kind of planes that we (potential pilots) are gonna fly for the rest of our career. smaller airplanes might give a wrong impression.