simple example for buying coins ;

coin a ( low price at 10$ )

coin a ( from low price 10$ rises to 15$

5$ divided by 2 = 2.5$ this is support point 1

support point 1 price is the middle price.

12.5$ is support point 1 .

support point 2 12$ , 3 11.5$ , 4 11$ , 5 10.5$ , 6 10$ .

here I will buy up to 6-10 times purchase ...

as long as there are funds at any price support haha ( just buy anywhere the price )