According to the application manager for Creative cloud, Muse is downloaded and installed on my Mac but it won't launch and I can't even find it with a local search on my computer. I am also unable to redownload it because Application manager thinks it is installed.
The Adobe Creative Suite Cleaner Tool should be able to fix the problem. Here is the link with instructions. This usually resolves any problems in the download and installation process. Essentially you will uninstall your apps, run the cleaner tool, then reinstall the apps.
Please let me know if it does not resolve the issue.
Europe, Middle East and Africa