She gave me her number but she doesn't text me back?

Yeahhbro
So i met this girl on a dating site, she gave me her phone number and we have talked maybe two times. The first time i texted her whats up and how she was doing, she said that she came from school and was tired. I replied that if it would be ok to talk now or maybe later since she was tired, she didn't answer. So about a week passed by i would send texts like i hope you have a good day and hello how are you, but no answer. I texted her then if she would like to go on a date, she finally answered and said that she was busy all week, but said nothing on the weekend, i asked later if she wanted to go on the weekend but no answer. Again i waited a week and texted her Sunday but no answer. I dont know what to do up to this point, because i feel like i am going nowhere with her.
She gave me her number but she doesn't text me back?
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