Anyone that has a minimal capital that he cannot have a discretionary income in which he can use to invest in bitcoin does not need to save for in other for him to have the money that he wants to use to buy bitcoin. This is because he cannot buy once and relax believing that he will make good profit from the little amount of bitcoin that he bought, and you are investing in a long term . He needs to continue buying regularly using DCA method in order to him to grow his bitcoin investment to a level. What that person needs to do is to look for another means of income, that he can use for his bitcoin investment and also for his emergency and reserve funds, why he uses his first job to take care of other important needs and expenses.
Apart from that I don't see how such person will be able to invest in bitcoin, because it will be a waste of time and like gambling because he is not prepared and does not have what it takes to start his bitcoin investment journey.
Your explanation is very confusing, regardless of what you say, I don't know which point to take.
You have reserve funds, you are ready to invest because reserve funds are funds that are not used for other needs.
Some mistakes in investing are of course their budget is not enough in the sense that they don't have reserve funds so this will affect their investment journey.
In phase one
Everyone invests easily but how can they invest in the long term. Yes, this is something that beginners should think about, where the finances set aside for investment do not interfere with their daily needs at all.
In the second phase.
Routine investing which is done every week in order to reach the target level, such as buying with DCA, waiting for dips and lump sum moments.
The third is to resist all temptations of lust. Of course, this third phase is what some of them often fail to implement because they are tempted by short-term profits.