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 .
Improved the reliability of playing back high-efficiency formats like H.264 and HEVC media. Apple Final Cut Pro X 10.5.4 for Mac Free Download
Apple recently overhauled its trial system. Here is how you can currently access the software: If you are running macOS Catalina (10