Recommend me a book for the ‘staring at the ceiling at 3 AM’ genre

Recommend me a book that feels like walking through a city at 3 AM after your life quietly fell apart. Not necessarily sad. Just… hollow, intelligent, strangely beautiful. I want something filled with sleeplessness, obsession, ambition, loneliness, philosophical spirals, emotional suppression, cigarettes burned down to the filter, people pretending they’re okay when they absolutely are [...]