Answer:
According to FutureLearn.com, "Even major Philippine languages, such as Kapampangan, Pangasinan, Bikol, and Ilokano, are in decline, with some languages disappearing faster than others."
Now for the reason of the being: Military and government subjugation (the action of bringing someone or something under domination or control) have played a role in the loss of these languages, due to the loss of cooperation between the government and people, calling for militarization in the governmental basis.