She will tell you everything you need to know, up to and including if you have a chance or not.
Find out what she likes, what she doesn’t like, and most importantly: What she looks for in a man.
There are also some unusual terms on some websites where they claim they can irrevocably use any information that you have provided to them.
There seems to be no opt-out as to how far this data is shared between related sister companies.
That means that your problem is almost certainly in your approach.
Add to that that each individual lady has her own turn on and turn offs, and the wrong move can get you friendzoned with the quickness.
Knowing that, you need to work on not figuring out what’s wrong with you now, so much as figuring out who your ideal woman is, who it is that she wants, and turning yourself into that. First and foremost: If there is a woman that you are attracted to, listen to her.
For now, let us break this one down into pieces: You are 27, but never dated and never had a girlfriend; we will assume that means you are a virgin, too.
You’ve been attracted to girls, but got shot down every time you’ve tried; now you are wondering what the problem is.