Thank you for sharing your experience.
It appears that you are encountering an unusual issue with Xcode not displaying recent projects.
To resolve this, please ensure that both macOS and Xcode are updated to the latest versions compatible with your system. While you have mentioned your current versions, it is advisable to double-check for any minor updates.
Could you kindly provide a screenshot of Xcode when you attempt to open the “Recents” folder using the “File” menu? Please note that the screenshot should display the contents of the “Recents” folder.
File -> Open Recent

Please indicate whether you observe any recent projects or if the list is completely empty.
Albert Pascual
Worldwide Developer Relations.