When cold approaching,texting,going on dates

The one important thing is your attention, so if you see that the woman your paying attention to is not interested, cut it off immediately and move on

It literally saves everyone especially you time

Even on dates, if you go for a kiss or any little physical touch on the second or third date and she doesn't reciprocate it back, then yea that's a universal/obvious indicator she ain't interested and you haven't built your attraction

If normal/average guys applied this, then dating would be much easier for them