If you are running macOS Catalina (10.15.6) and have previously purchased the app, you can redownload the compatible 10.5.4 version from the Purchased tab in the Mac App Store .
The standalone version remains available for $299.99 on the Mac App Store. 💻 System Requirements (v10.5.4) Final Cut Pro release notes - Apple Support Apple Final Cut Pro X 10.5.4 for Mac Free Download
Can typically access a 30-day trial via the Apple Creator Studio subscription. If you are running macOS Catalina (10