As an Indonesian person, I can say the ability and the interest towards our local language slowly decrease. I worked as a teacher in one of elementary school foundation 3 years ago. What makes me sad is that children nowadays are more communicating in English, some of them even don't really understand Indonesian, and I can't say anything for our local language.
I learn Javanese here in my province, and we're not only learn how to speak, but also Javanese has its own character which is totally different with our national language.
Yes we can't avoid the globalization effect and we need to learn English or any other languages which would be more beneficial in terms of having a bigger opportunity for our career. But learning local language is necessary to remember our heritage and where exactly we are from ❤️