This is based on two model : the first is the zigzag model of Ricardo Santos the second is a pivot system for high and low to find resistance made by jaggedsoft I try to show the connection between them and to form a cross of when the zigzag model crossing the pivot model
this is seen in show sig
best approach is to find the low based on the pivot system and try to make your buy around that spot . when there is high resistance either exit or buy when the asset cross it above . in case of short do the opposite