You feel lost in a crowd/Feel out of place

“weltschmerz: its the depression you feel when the world as it is does not line up with the world as you think it should be.” ― John Green, Will Grayson, Will Grayson

“If at large gatherings or parties, or around people with whom you feel distant, your hands sometimes hang awkwardly at the ends of your arms - if you find yourself at a loss for what do with them, overcome with sadness that comes when you recognize the foreignness of your own body - it's because your hands remember a time when the division between mind and body, brain and heart, what's inside and what's outside, was so much less. ” ― Nicole Krauss, The History of Love