Is it possible to get a green card or become an immigrant by sneaking into Australia to work? I am an English major.

Unlikely, don't be fooled! Many people are sent back to Australia every year! Studying abroad is one way, and there is an apprenticeship visa. Although it is not 100% left, it is better than smuggling! Black Australians are not protected by labor laws at all, and it is still a question whether they can survive! Either, you find someone to get married and find someone who already has a green card. Anyway, smuggling is still strictly investigated, stealing chickens and not eating rice! There are many ways to go to Australia. It is impossible for you to immigrate directly as a college student. I suggest you apply for studying in Australia, then get your diploma there, and then emigrate, that is, invest more, but you can also earn more living expenses by working hard.