It is natural for some people whose finances are not stable or it can be said that they have minimal capital to accumulate money first, indeed for these people it is not easy, but if you have the desire and motivation you have, and work hard to invest in BTC one day you will succeed, there are many examples of people who are rich starting from small things, as long as we are consistent, let time tell how strong these people are and reap the results in the future, don't be too hasty because investing is risky.
Start collecting money if you think the capital target has been met, then invest using the DCA method, because it is easy to understand.
Dreams and wishes do not make any new investor succeed in Bitcoin. There is an approach to any investment and Bitcoin just like any other investment has an approach to follow if not one would definitely regret investing in it. Dont invest if you do not have any disposable income that is the first rule. The money used to invest should be your disposable income because every monthly bills and emergency funds should be sorted out before initiating any investment. After that knowing how to secure and manage your funds and this part is very tricky. And lastly setting a target while patiently and consistently investing would make an investor succeed in bitcoin investment.