If you're missing an app on your Mac, there are a few ways you can try to find it. First, check the Applications folder to see if the app is there. If it's not, try searching for the app in Spotlight. If you still can't find it, check to see if you have any backups of your Mac that might contain the app. Finally, if you've installed any third-party software that allows you to manage your apps, such as AppZapper or AppCleaner, check to see if the app is listed in those apps. If all else fails, you can always search for the app online and download it from the developer's website.