IS THERE A PREVIOUS VERSION OF THE APP AVAILABLE FOR MAC USERS LIMITED TO "MacOs Catalina"

My iMac 27'' is up to date with the available apple software yet when i try to download, I'm alerted that only users with MacOs 12.3 or greater are able to DL and install... PLEASE TELL ME THERE IS AN ALTERNATIVE OPTION FOR MacOs 10.15.7) (CATALINA) users???