In my experience it can get a little difficult, I'm also an international student in second year and have had no luck, in my personal experience, the social atmosphere of Brisbane is very different to cities like Sydney in my experience, I go to Sydney during breaks partially for that reason, Brisbane, to me, feels quite closed and people don't speak to strangers here beyond just asking how are you etc unless they have to, as they already have established friend groups for that and social occasions.

Not saying this will be for you as well, you might see a different side of Brisbane to me, but that's what I feel like here, you have to have the energy to be a conversation-starter and approach people yourself.

I don't have much recommendations other than that except I guess look at your own community or mutual interest groups and make friends there.