Why it’s important to sometime separate the sexes, the 1st picture is targeting females only, same interest and location and my estimated daily reach is in the thousands.
Now when I switch it to males only, my estimated daily reach has decreased to couple of hundreds but the potential reach is still in the millions.
These numbers increase and decrease even more when I add in different aspects to minimize my potential reach. So when placing ads on FB check out and see if your ads will work best with females or males.
You can do split testing with fb ads and I highly recommend doing this because it can save you a lot of money with your ads.