What types of apps are you trying to recover, are they pre-installed apps like the Camera, Media Player... etc. apps that come pre-installed with Windows, and if so, what happened on your PC caused the apps to be missing.
If it is the default apps that are pre-installed in Windows and there are many apps missing, the best option would be to perform an in-place repair with the Windows 10 ISO, that should re-install a full set of default apps in Windows.
Please ensure you download the ISO in the same language as you use for the Windows UI, follow the steps, this is then not like re-installing Windows, it is just like an update and your personal files, settings and installed software will not be affected.
Click this link:
https://www.microsoft.com/software-download/windows10
to download the Media Creation Tool (Click on Download Tool Now), with that you can download the latest Windows 10 ISO (Select Create Installation Media for Another PC), then choose ISO, not USB
When the ISO file completes downloading
Disconnect from the Internet
Disconnect all external devices with the exception of a mouse or keyboard.
Temporarily disable any 3rd party Anti-virus you may have installed
Then, in Windows File Explorer, double click the ISO and then run Setup.exe and select the Install option.
Very Important - ensure you select the option to keep your files and apps.