Is there something wrong with me or something

so I asked a girl at the pub out for dinner and she said yes and stuff and she was actually really cute and nice. Anyways a week later we head out to dinner and I order some food and she orders some and we get talking and she asks some questions and I ask some back and I thought it was going really good. We finish eating and I ask her if she wants to go for a walk or something cause it’s not super late out or anything and she says no and I tell her ok. She then just stands up says not to call or text her and just leaves.

I haven’t heard from her since and I don’t know what I did wrong? Am I just undateable and unloveable :(