I wouldn't recommend it, but technically speaking you could still get rich by trading bitcoin with leverage (margin trading).
Depends on your starting money and what "rich" is to you.
Or just by active trading, accumulating at the bottoms, and selling the tops
You don't have to do all that. Holding can still be very profitable, again depending on how much you invest and what your goal is.
Holding 0.1 will not be life changing, even if your goal is $200k, but a few bitcoins can be.
But yeah, the only way we could see another x300 is either in an apocalyptic scenario when fiat systems collapse and Bitcoin jumps in to replace them, or when it first drops to a few-hundreds range and shoots back up.
You're aiming too high. Let's be more down to earth and think what scenarios are likely to happen. People always tend to aim too low in bear markets and too high in bull markets which is why some traders are still waiting for 10k bitcoin while others who waited for 100k last cycle regret that they didn't sell.
Is 100k possible this cycle? Of course it is. I'm almost sure that we'll see it by the end of 2024. That's a 6x if you bought last year during the FTX drama. For someone with just 1 bitcoin that can definitely be life changing. 10BTC bought at that time is going to be life changing for most people.