I get approached by women often but seldom get opened; unless I am doing some testosterone showmanship.
BUT, you must see a woman's approach not from a man's eyes but from a woman's eyes. A man will close the distance with a woman at around 2 to 3 feet. That's a man's approach. And then say his opener with something like, "Hi."
In contrast, a woman will close the distance at around 4 to 6 feet. And it will be very rare for a woman to say "Hi" to a complete male stranger unless she has seen him for around 3 to 5 instances. The rule of thumb is that by the 7th instance of seeing you in the same venue, a woman who is attracted to your looks will say her opener if you still haven't said yours.
A woman's approach is very subtle. It will take a lot of courage from a woman to close the distance at something closer to 3 feet. She will also refrain from any sort of long eye contact because she's very nervous.
As for testosterone showmanship, several women can't help but open me when I sing a rock song in a low, husky voice. And a few also open me when they see me at the plaza practicing kali with my baseball bats or doing HIIT kickboxing, or some fancy TKD combos.
Try to be sharper in reading those subtle signs and boost your testosterone up with proper diet, lots of exercises and ample rest. A feel good vibe also helps since women can sense if you're the approachable-type or the bitter, grumpy-type.

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Approach. Open. Escalate. Isolate
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