Well,its a little hard to explain,but here we go.

some time ago,some girls said to me,that they love my voice,so anytime they past next to me,they asked to say something
later,about 4 girl aproached me(the same of the voice stuff,and some others girls),and a FUCKING HOT blondie started talking to me,asked things about my old school,if i was enjoying my new one,she ended by saying that "i was handsome as always", i just said NOTHING,then she walked away,and never talked to me again so far.
PS:The blonde one used to greet me every day, with a kiss on the cheek,but she also stopped.
even later,i maked out with a girl of these other 4 girls.

I DIDNT know PUA back then,so i was kinda lost on the game.
I know PUA now,but i kinda on suck on it,too much aproatch fear.

anyone have any adivices? something that i should've done?
anything you say will help.

If it was too confuse,just ask and i will answer as fast as possible

Thank You.

should have tried to start to hang out with these girls and try to hook up with them.. If they were approaching you and speaking to you it was for a reason..

Really you should just go up and talk to them. Start by introducing yourself. Tell them where you are from and what you like to do. Ask them lots of questions. And be patient and listen to their answers which can hopefully lead you to more questions to ask. Compliment them on their clothes. Ask them if you can buy them a smoothie or something innocent. Suggest that you see each other another time. If they ask why you didn't speak before tell them you were with someone and are a faithful guy or tell them that you were shy because of their intimidating beauty.
By the way, what is PUA?

That is a HOT picture in your avatar. I hope you took it yourself.

PUA = Pick-Up Artist