Missing Maps???

My watch came preloaded with Australia maps (which is great).

But when COVID recedes a little and people start traveling again I plan to venture in S.E Asia...
There appears to be NO TopoActive maps for Asia!!??

I did a google and found references to people who had purchased the watch in Asia, and that said maps came preloaded on the watch ... so they must exist!

Also I noticed that on the Garmin store page, there are also NO TopoActive Australian maps; even though they are loaded onto my watch!

Where can I get maps??
And if Garmin has them, it seems a bit silly that they don't want to sell them!

Thanks in advance,
Kris