I feel the same way. I'm doing an internship and my first preceptor was so curt with me. She was frustrated by my questions and she either completed my tasks for me or left me to do everything on my own. I had overwhelming anxiety and I cried twice. I'm not even a crier. I can only think of 2 or 3 nurses who were actually nice to me. It was extremely discouraging. And you'd think they'd want to encourage new nurses because they don't want us all to bail before they need us someday.
The nurses who have stood out to me: give me tips, offer to show me around, ask me if i've ever seen something, ask if I'm okay, encourage me, etc. They're friendly, curtious...but I have to say most nurses I've run into are task-focused and cliquey.