'Select Components' page My Qt version is 5.14.0, why all the components showed in this list on the 'Select Components' page are all I had installed? How can I install those that I haven't installed? For example components for Android? Any help would be appreciated:)
You can try to check/uncheck the category filters in the right column to show more components.
It could also mean that you have already installed all the compatible modules for your environment.