Australia has no local car manufacturers and hasn't for some time. Toyota is by far the biggest car seller , followed by Mazda and Hyundai.
https://www.carexpert.com.au/car-news/vfacts-australias-2021...
Tesla seem to have sold 12,094 locally last year, putting them at 18th on that list.
https://www.carsguide.com.au/ev/advice/how-many-teslas-are-t...
Australia with its long drives if you leave a city and lack of infrastructure doesn't suit electric cars at the moment. Will change eventually, but likely lagging the rest of the world.