总在人前幸福人后却更孤独
[zŏng zài rén qián xìng fú rén hòu què gèng gū dú]
This username conveys the bittersweet experience of someone who pretends to be happy in front of others but feels deep loneliness when alone. It reflects a person hiding their inner struggles and emotions from the world, while projecting an outward appearance of contentment or joy.