There are many ways to do it if we really want Bitcoin, we don't always look at the price and I agree as you said if we can use the DCA method to collect Bitcoin slowly with the money we have, it will be more effective.
However, if someone sees the current price of Bitcoin, of course it is expensive and not many people can afford it, it's all a matter of mindset and anything we can get if we really want it.
I understand, the price is expensive right now, but in a few years this price will be seen as a bargain, so considering that premise it is a matter of saying that if there is good money you should take advantage and buy everything you can in Bitcoin while you can, because right now it is almost close to $100k, but when it is close to $800k? how would that happen? in fact that will happen, but for now things look like that, it is not because I am very positive, it is that I know that that will happen, that is why the DCA method is infallible.