Also, the “habitable zone” doesn’t take into consideration those planets with sufficient internal self-producing heating processes (volcanic, etc). Planets starting around Earth’s mass generate their own heat via radioactivity within their core. There are lifeforms that exist on Earth entirely independent of the Sun’s energy/photosynthesis, around undersea volcanic vents, etc.
The range of possibilities is pretty vast. Planets in warmer areas of space with multiple stars only a couple light years away. Planets orbiting binary pairs which combine to heat a planet etc.