Some things I've learnt in my time here:
Depending on external means of, or validation of, self esteem is never a good idea and leads to madness. First love yourself. After that everything else is garnish.
If a woman/girl ignores you it's probably a signal that they're not interested. Yes, it can be rude but it's often the quickest and easiest solution from their point of view. I normally give 'persons of interest' two chances. After that I leave them to their own devices….
Not all ladies are lovely. Not all girls/women are ladies – lovely or otherwise. There are some really nice people out there but they are few and far between.