garage band 10.3.1

I am having MacBook Pro mid 2012 running Catalina 10.15.7

Earlier I was having Garage band during the first OS El Capitan which came with the system

after the upgrade of OS, noticed that the garage band is not available

now I wanted to reinstall the garage band but the one available is for OS 11,

I am not able to locate older version, Can some body direct me to the download page where I can find Garage Band older versions

Thanks