Women are generally introverted?

This statement is false given that the majority of people are extroverted.

I don't think you are using my this term correctly.

Introverted-----re-energizes through alone time.

Extroverted-----re-energizes through contact with other people.

But in general, many women are irritated by guys who hit on them at the gym. (It's a BIG reason why women only gyms exist.)

I also don't think you understand what a red flag is. A woman not giving you 100% positive feedback is not a red flag.

Red flags are more along the lines of "he won't tell me where he lives even though we've been dating for three months" hence a red flag of the guy being married! (For example.)

If you interpret every little thing that didn't go perfectly as a red flag, you will be single for life as you'll end up misinterpreting actions and throwing people away for no reason at all.