Installing Lyra Wallet on Mac is a relatively easy process.
Go to the Lyra Github Releases Downloads Page: https://github.com/scryptachain/scrypta/releases
Click the latest version of the macOS.dmg file
Once the DMG file has been downloaded double click it
It will create a file called Lyra-Qt
Move this file to the applications folder
Run this file to start the LYRA Wallet