To embed two Fiori Elements apps into one Fiori Freestyle app, you can follow these steps:

Create a new Fiori Freestyle app using the SAP Web IDE or the SAP Fiori tools in Visual Studio Code.

Add two Fiori Elements apps to the Freestyle app. You can do this by creating two separate Fiori Elements apps, then importing them into the Freestyle app as SAPUI5 components.

Define a navigation target in the Freestyle app's manifest.json file for each Fiori Elements app. The navigation targets should specify the path to the respective Fiori Elements app's launchpad tile.

Create navigation links in the Freestyle app's launchpad to launch each Fiori Elements app. You can do this by creating a targetMapping object in the sap.ui5 section of the manifest.json file. The targetMapping object should map each navigation target to a unique launchpad tile.

Configure the navigation between the two Fiori Elements apps in the Freestyle app. You can do this by defining a custom navigation handler in the Freestyle app's Component.js file. The navigation handler should listen for events from the launchpad, then navigate to the appropriate Fiori Elements app based on the event.

Test the Freestyle app to ensure that both Fiori Elements apps are properly embedded and can be navigated to from the launchpad.

Overall, embedding two Fiori Elements apps into one Fiori Freestyle app requires some knowledge of SAPUI5 development, especially around navigation and component integration. If you're not familiar with SAPUI5 development, it may be helpful to consult the SAPUI5 documentation or work with an experienced developer.