Seeking job is a big job. But you think about it. you got some interviews but did not pass any. Is there anything wrong with ur interview skills? They ask u to go to the interview means they are interested in ur experiences. This means ur resume is good. So you need to be really good prepared for the interview. I mean catch their eyes by ur logic. Experiences can be made and express in different ways, sometimes you can make it bigger even though you did not have such exeperences. When they let u in the company, actually you also need to start to learn again. So it doesn't matter what u say during the interview, I mean you can make some stories based on ur own experiences .just be confident. u will pass it next time. keep going
And another thing , PR is really important for hunt a job as OZ companies prefer to hire stable employees, especially in Adelaide. They do not like change as they need to train ppl again if previous emplyees leave because the visa issue