Two things first, so the hooks fit your brand instead of sounding like a generic template:

• What you already have. Mascots, visuals, a tone of voice, any dream statistics you can quote?
• How strong you want the tone. Aggressive hooks that stop the scroll, or something softer and more reassuring?

Then the rule is simple: each mascot gets one emotion, the first line targets that emotion with a number or a surprising fact, and every ad ends with the same promise, "Understand what your nights are telling you." A starting set, by mascot:

• Loopy, recurring dreams. The one you described, dreams stuck in a loop.
  • "The same dream, 4 nights in a row"
  • "A recurring nightmare, still no reason"
• Confusion, the disorienting fact. Dream logic that makes no sense once you wake up.
  • "1 minute in a dream = 17 minutes awake"
  • "259 people dreamed about work last night"
• Fear, the anxiety hook. The nightmare that won't go away.
  • "A 1998 nightmare, still running"
  • "The elevator won't stop, 48% of nightmares"
• Toxic, the ex hook. The dreams we don't admit to.
  • "37% dream about their ex, 0% admit it"
  • "67% dream more about their ex than their current partner"

Keep the visual identical across each mascot's ads so the emotion is clear at a glance, pick the two strongest hooks per emotion, and let the first line stop the scroll.