I spent around $500 on data, I got significant data therein.
It showed that:
80% of conversions came from RHS
80% from women in the age group 55-64.
My cpa was $11
My goal with optimizing was to bring CPA down;
To optimize & achieve this: I duplicated adset, set targeting to RHS only and 55-64 age group. Ran it for 3 days, and my CPA went to $19.59.
I am confused, why did my CPA go up and not down?