Questions: Girl's Behavior

Specifically after talking to any girl, they often undid their ponytail to unleash the sexy female hair. Is that an attempt to seduce me? (Dont exaggerate, I mean is that a sign of liking?)
In other cases a girl walks around with loose hair and after I show interest she would tie her hair up, what does it indicate? I assume it's sometimes done to "repel" me?

Any other comments?

"That's understandable, however a first thing you should avoid falling into, is refraining from falling into the attitude of "it's women's fault", or you won't get anything, because this approach is repulsive, for this reason: you don't offer anything on the table, but only expect to have the "debt" refilled by women who actually don't even know you and are not responsible for the rest of their gender. It's really repulsive to have the feeling to owe something to a random guy, and so are the perceived expectations, for the same reasons: if you give too much, or invest too much, and they're not responding with the same, then you're showing what are your expectations and how much they "owe" to you. And they will escape. So never overdo, never overgive, don't appear desperate and cluelessly offering your money, time and attention, when it's not reciprocated readily.
A lot of guys manage to have relationships, even being not really attractive physically, while others who are good looking keep failing. Why? Because they emit some bad vibes through their behaviours. This thing of women liking bad guys is not because they're bad, but because they're not "granted" to them, and prove to be well off alone, without them, and so they look like being more valuable, with much more to offer, quite "independent". While being granted to them, saying sorry for random things, asking consent for things that generally don't really require it, apologizing for taking their time (oh my god), giving them the literal option to not reply to x y z, etc. Anything that puts you in a secondary role and granted to them, is potentially a turn off. Nobody wants to start anything with someone who indirectly shows to need more than what he can offer (and actually it's valid also for men, about women who behave like that)"