It is highly recommended that you for the following reasons:

GarageBand is resource-heavy. To run it smoothly on Catalina, Apple officially recommends:

: Once the App Store is open, click on the "Search" tab and type "GarageBand" in the search bar.

The solution is to "purchase" the free GarageBand 10 app using a friend's or family member's . Here's what you do:

A prompt will appear stating: "The current version requires macOS 13 or later, but you can download the last compatible version." Click to install the correct version for Catalina. What if you have never downloaded GarageBand before?

A: No. GarageBand '11 is a 32-bit application, and macOS Catalina is a 64-bit-only operating system. It will not launch.

Once the download starts, you can immediately cancel it. The app is now linked to your Apple ID history. of the newer Mac.