mainstream media
US /ˈmeɪn.striːm ˈmiː.di.ə/
UK /ˈmeɪn.striːm ˈmiː.di.ə/

1.
traditional mass media organizations that influence a large number of people, such as major television networks, newspapers, and radio stations, as opposed to alternative or independent media
:
•
The story was largely ignored by the mainstream media.
•
Many people get their news from the mainstream media.