There is no doubt the travel/tourism industry has copped the brunt of the pain served up by this pandemic. I sympathise with you, it must be hard handling your predicament. However that said it is not unprecedented as many other industries have shut down permanently or temporarily in the past. At least you have / had jobkeeper to keep you afloat short term.Most past crisis events the workers made redundant did not. Years ago redundancy pay did not exist only owed leave etc.Go back further not even the dole existed.
There is no way the government or taxpayer will keep funding out of work Aussies the higher rate much longer. Not saying that is fair or not, just a fact. Unless you really believe you are about to be re hired soon I suggest you move on,find other employment / training before the damage to you is extreme financially and or your state of health. That is the private enterprise system like it or not we live with and always have.