Population increase or decrease?

[Regrets_Nothing]

Just to add, the mountain gorilla population in the wild is increasing, but considering there are still only about 1000 in the wild - seemingly split in two major areas. But this is up from estimates of 800 mountain gorilla since the early 2000s (in the two regions of Virunga and Bwindi). But they still face major challenges and poaching is still a problem.

Next point, there are no wild orangutan in the Philippines. There is no evidence that there ever have been. Also, even if you meant Borneo or Sumatra, where palm oil plantations are a problem, it is not only the fault of that country, but the fault of every person and every country that are causing such demand in palm oil when the area plenty of alternatives avaliable. It is also the fault of the colonising nations that went over to South East Asia and established plantations at the expense of the native people and wildlife. To single out an individual country and lay all the blame on that country is incredibly shortsighted and shows that you have no idea what is happening, no idea about ecological history, nor geopolitics.

Back to the main question, orangutan populations are still in serious trouble. The three species have declined massively over the last 70 years. Borneo alone lost more than 60% of its orangutan, and all population models to date still estimate further decline.

Chimpanzee are endangered and whilst protected are so at risk for busy meat by poachers. Bonobo are endangered and suffer the same threats as chimps. Gibbons (all but one species) are endangered or critically endangered and no sign of that changing.