“Dead people do not wander around.”
May you be visited by a ghost to change your mind if you so desire. They are as real as real can be. I would not wish it on anyone.
I’ve been to many funerals and viewings where I see the deceased person standing there observing. At one, an elderly minister’s wife died. I had never met them previously as they were distant relatives and I went to provided transportation for minister’s brother to attend his sister in law’s funeral.
When the minister’s deceased wife saw me and realized that I could see her, she got all emotional. This influenced her husband, the minister who she was standing next to, and he started crying when we first met as strangers.
Please note that Jesus differentiates between types of spirits.
Some He calls evil spirits.
Some He calls unclean spirits.
Some He calls demons.
They are not all the same.