And don't need to be Masto instances, either. Anything that federates would be fine...
@uxintro saya masih belajar bicara Bahasa Indonesia, maybe we can practise together? 🤔
The mstdn.id instance used to be a thing. Otherwise, try the kopiti.am Mastodon instance which is Singaporean.
Consider this a friendly, local pub. Make yourself at home, bring your friends, have a good time! Meet new people, have a laugh, enjoy the ambience, and the Oxford commas.