I get unfocused and anxious because of all the people
Wow - I know exactly what you mean. I get really anxious and almost tunnel-visioned. Feel like running away. I went through this recently at a local outdoor gear swap. Stuff all on tables in a room, and people roaming everywhere, heading every direction - it seemed like chaos, even though there were probably about 30 people in the room. I thought I'd explode, I was so anxious. Felt trapped at every turn.