Bugs land on face at night mainly you cant see them?

Bugs are attracted to warmth, light, and carbon dioxide, which can explain why they might land on your face at night while you sleep. Since it's dark, you are less likely to notice them, and their small size makes them hard to detect. Additionally, many insects are nocturnal, making them more active during nighttime hours. Keeping Windows closed and using screens can help reduce their presence indoors.