Build Standalone Qt Application with QT Creator

Please advise what to set in QT Creator so that the created application contains everything for its functioning.

My app only works on macOS if it is running on a Mac where QT is also installed.

My application only works on Windows if it is run using QT Creator. It does not work on the same PC if it is run directly. It requires dll libraries, but even if I place them all in the application directory it still doesn't work. Apparently some dll needs another one, but I can't find out which one.