What makes emigrating a good option?

I work as an engineer at one of the multinationals. Decent job with good opportunities for progression. However, the cost of living (rent, specifically, but also other expenses) have made it basically impossible for me to save. If I do manage to put away 300 a month, it usually gets eaten up when something “pops up” (car, for example). This obviously puts buying a house far out of my reach with ever increasing property prices.

We all know the situation is dire so this isn’t another post complaining about it. I just want to know what makes destinations like Australia a better option? My goal is ultimately to not have to live month to month so I can save for a house, but when I look at average salaries over there, after conversion, they don’t seem significantly higher (according to google)… is cost of living a lot lower? Just trying to figure out what my options are and wondering if anyone has any insights.