How do I tell what type of grass myt lawn is

The lawn in the photo provided looks like buffalo lawn.

Try 'Yates BuffaloPRO Weed’n’Feed 2.4L Hose On'. Easy to use, liquid hose on that kill weeds and feeds lawns at the same time. Specially formulated for use on buffalo lawns. Selective control of bindii and most broadleaf weeds in lawns, with added fertiliser for healthy green lawn growth. Click here for more info on this product: https://www.yates.com.au/product/lawn/lawn-weed-control/yates-buffalopro-weed-n-feed-hose-on

The benefit of using the hose-on product, is once the product has dried on the lawn, it is safe for pets and children/people to return to the area.  To test to see whether or not the product has dried, place a piece of paper towel on to a treated leaf. If the paper is dry then the product has dried. If the paper is wet, allow to dry for another hour and then re-test.