Do really ghosts exits

A lot of people in the world believe in ghosts, but not everyone, and you don't have to at all. Many people fear ghosts (if seen) before even trying to communicate with them (their whispers can be very confusing and many people find it hard to understand them.) So (point is) it's your decision, if they exist or not because they could be hallucinations or they could be real. If you believe in them you do, if you don't you don't. The decision is yours.