Does anybody know how to get 3X margin on simple stocks (no CFD, options, anything weird)?

Hi, I hope you could help me. I just recently moved to Australia and the stock market, the U.S. stock market usually opens when we are sleeping here. My swing trading method is very consistent. I've been using it for two years, getting better returns than the S&P average. And I would like to start trading it a bit more leveraged. I usually trade on a 1.5 leverage with my IBKR margin trading account, buying simple stocks. Sometimes I go a bit further with higher margins, with higher leverage and lower margins by using spreads and options and leveraged ETFs. But I'm tired and to automate some operations, I would like to just start buying normal stocks, not CFDs or anything weird because they allow you to operate on a 5 or 10x, but a CFD is not a stock and they usually have a higher commissions, higher spread and everything else. And I would like to trade at least on a 3x leverage any kind of normal stock, just the, even the best ones, Apple, Netflix, Nvidia. I'm not talking about shitty stocks that usually need a higher margin rate. With interactive brokers, they usually say that you have a 30% of margin rules. then by a simple calculation, you should be able to buy 3.3x of your account value, but when I tried to do that, they usually allowed me to buy up to 2x, which is nonsense. I tried to speak to a sup about many times and they can't help me with it. But the thing is that with my standard margin trading account, I can't buy more leveraged stocks. If I try buying options, I know how to use them in a professional way. The best and the most similar thing would be creating a synthetic future, but you should be buying many legs and it's a bit complicated, ending up with higher, with greater complications and higher commissions. And usually the best thing is just place a stop limit order to buy stock and go to sleep. Then, could a portfolio margin account help me if I wanted to buy nearly 80% of my portfolio in a 3x basis? Let's say that I have $100,000 in my account. I want to operate putting down $80,000, finally opening a $240,000 operation on any normal stock. Could the portfolio margin allow me to do that or not? Because I read all Interactive Brokers' page and many other brokers' pages, and I can't figure it out. It's driving me crazy because I can't find the right investment product now. I've been three months trying to develop an options automatic system, and now I was trying with CFDs, but they are not what I'm looking for. So, I don't know, please, if you know something, help me. I would really appreciate it. Thanks a lot for reading!