What is the ruling on praying behind an Imām who makes Qunūt in the second Rak‘ah of every Fajr Prayer before Rukū‘ ? Is Qunūt in the Fajr Prayer a Sunnah or Mustaḥab (desirable)?

What is the ruling on praying behind an Imām who makes Qunūt in the second Rak‘ah of every Fajr Prayer before Rukū‘ ? Is Qunūt in the Fajr Prayer a Sunnah or Mustaḥab (desirable)?
Islamic Ruling on playing football for rewards and watching such matches.