I not only sense them, but feel and usually hear them. Years ago I used to help the State Police homicide detectives on unsolved murder cases, but it beat me up too much.
It is horrible connecting to the spirit of a person who was murdered. Often all the crying and hysterics makes it very difficult to communicate with them. Used to freak out the detectives. Took me a while to prove that I was not involved in the murders as the information was often unknown to the public and accurate.
I’m a Christian and Jesus is my Savior... There is just much more to the Bible than most understand. It is however.. very very accurate, just not understood.
You are using the phrase “spirit of a person.”
Again that would be a human ghost, were it to exist.
I believe demons (not human spirits) are playing games on you, and/or you are being imprecise and unbiblical.