What is the visa pass rate in Australia?

What is the visa pass rate in Australia? About 90% is still relatively easy, but if you are afraid of being refused a visa, you can ask the problem-solving network, which specifically refuses a visa, and then sign it. My roommate went to Australia last time and was refused a visa. Later, they got it. They have a background in state-owned enterprises and contacts in the embassy. They have a background, but the price is not cheap.