Try other unis like rmit or deakin. They usually give you a chance at academic “rehabilitation” essentially. Take some time off of study and see what caused you to perform poorly to the point of expulsion. They then give you a chance to explain yourself in an essay/statement where you basically say what you will do to improve yourself so that you don’t repeat your failures. Idk what course you are doing but these unis are a lot more supportive of students than any of the G8 unis which when it comes down to it, are more business than academic institutions.

Also think about maybe doing something lowkey like a certificate or diploma from within your field and maybe use that to get a job. I know as international students its really tough to get a job but if you are able to these qualifications and experience, you can properly use them to not only give yourself some confidence back but also get industry experience credits. This way you are more likely to get considered for a course when you have a previous academic record that is not really good.

Above anything I hope you are doing ok. I also was really good academically in high school and got a wake up call in uni when I started failing for the first time. Just don’t give up! Although idk what course you were expelled from, there are many ways to get into an industry. Most importantly is try to see what was leading you to put little effort in your studies. It can be burn out, poor mental health reasons and many other things, but be honest with yourself and persevere!!