Hey everyone, new to PUA and need some advice.

Up until recently I havent been very good with girls, had alot of self confidence issues until i had some "epiphany" I call it, and realized that i was worried about nothing and confidence was in myself. So i told myself next time i go out or whatever i would be a completely changed person.

Well I met this girl at a party i went to with friends, and with this new mindset things went pretty good from my view. Talked a bit with her, joked and all that but also mingled with other people there, and at the end of the night she even played the whole cliche "its cold" routine and i put my arm around her and she seemed comfortable with it. At the end of the night, I got her number, and suggested we grab something to eat after shes off work sometime. She says thursday after shes off, but she ended up getting off too late, but she says "maybe saturday?"
Well i decided to switch it up a bit and said id like to take her to this awesome spot i know for a hike saturday. I text her the day of to confirm and i have to remind her that we setup something for that day. Now after saying id get her at 8, she cancels the same day for unknown reasons, but says another time, only now says we should "get a group together and go for a hike"

Did I do something wrong? Is it pretty much dead? Any help or tips would be greatly appreciated