Eich, so nice to hear from you again! As well as Len and the cats!
Yeah, we do have lots of native fig species in Australia, including some that grow in the desert. There is one outside Lasseter’s Cave, which I actually saw at first hand years ago when I was working as wilderness survival person on an expedition looking for, among other things, Lasseter’s Reef (which they unsurprisingly didn’t find, but that is a whole nother story). None of those grow close to here though, the nearest would be in Sanderston Gorge. I have planted figs in my own garden and a number of community gardens though, where they do well.
There are natives here which produce human-edible fruit, such as Tree Violet, Muntries, Heath Cranberry and Karkalla, as well as some of the Wattles with edible seeds and gum, but mostly we plant for habitat, and as you say, put in young plants and tend them until they can survive without help. Recreate and Trees For Life are very useful there. Advising on such things and helping to get things growing is part of what I do as a volunteer, being the local retired botanist. People come and ask me about their gardens, and I help where I can.