1,000 threads exist on this subject already.
And no matter how many threads exist he answer is still the same.
Some men don't want to be approached or pursued.
Some men don't care either way.
And some women insist, wrongly, that if a man didn't pursue the woman then he can't be a leader.
I have had a few times when I was pursued, what is a bigger determination is how willing is a woman to be lead.
In my early 20s I was chased after by an older woman, we eventually began dating. She was older, had more money and overall life experience, and when those things were needed she stepped up. Any other time she left me in charge.
People say it's up to the man, solely, to determine that he is the leader, but if a woman doesn't also Choose to take on her biblical role then there is no way to lead her, unless the man tried to dominate her, which is not how he is to be.
So so there is no simple answer. If you pursue some guys will hate it, as well as some women will interject their mouth into your business. And some guys won't mind or may like it.
A man may not have that kind of awareness of you and for that reason he may not ask you out. This doesn't mean he can't lead of you ask him out. Just means you saw him before he saw you.
There are so many factors that go into this that most of the naysayers ignore, because it would defeat their stance.