Trainees

Yesterday I went to a drinks event and felt quite offended by a few trainees. I was having a very interesting conversation with this guy and suddenly was interrupted by two young girls who went straight to talk to the guy and asked about what he does etc and did not even look at me or acknowledge my presence. I was then like "Hi! I'm Sandy, I'm here too." I wonder, did they go straight to talking to the guy because he's male, he's white, he looks older or all of the above? Ironically, he isn't a lawyer and cannot help them in their careers and I felt too offended to be generous with them. Even when I was like saying "Hi, I'm Sandy", one of the girls was too busy looking at her phone to respond. Gen Z syndrome? I don't know. 

In another group conversation, this young male trainee kept being sarcastic and making fun of me for "working in Bali" and saying "sure there was a private debt conference" or "oh yeah sure you were on a panel". I gave him a confused look. There are four of us in this conversation and three of us are senior lawyers, we were all respectful and then there's him the trainee and he found it appropriate to be making fun of me, a person he just met - not once, not twice, but three times. I was so turned off. 

I'm confused how I got myself into getting snubbed by trainees.