Right one thing I forgot to mention is that the “sibling name” applies for your uncles and aunts too but with a different prefix.

So your dad or mum’s oldest brother would be called “paklong”.

Those that speak English would use Auntie and Uncle for “strangers” too. In Malay, there will be a distinction on age and gender, “pakcik” and “makcik” for those older/parents age, and just akak and abang for those similar to your age.

Dayum, that shit's quite complex... your country may have been externally colonized, but at least it wasn't significantly internally colonized to forget such naming complexity