Can’t download logic pro

Hi. I have recently purchased a Mid 2017 Apple iMac with Retina 4K Display with 3.0 GHz Intel Quad Core i5. The latest available ios update is around 13.1.

when I try and purchase Logic Pro it says can’t because Logic Pro only available to iOS of 14 and over.

The Logic Pro does not seem to offer a download of an earlier version’s compatible to my IOS.

please can someone help me with a potential solution. Thank you