terms similar to 'fake nostalgia'

• fauxstalgia — nostalgia for something you haven't experienced, or that never existed
• rosy retrospection — the psychological fallacy where people tend to remember the past more positively than how they felt about it when they first experienced it (though research so far has been inconclusive)
• the trope in ancient myths of a golden age followed by societal decline [2] [3] [4] [5] [6]
  • Wikipedia — Golden Age in Greek mythology and similar mythologies,   palingenesis
• saudade — [from Portuguese]   melancholy or nostalgic longing for something that you weren't able to experience, and may never be able to experience, despite longing to [wiktionary]
• Sehnsucht — [from German]   a longing for something that's unfinished or imperfect [wiktionary]