I am going to tell you happened to me when I was around 10 or 11. I am much older then that now. To give you some back story, this happened at my aunt and uncles house. We loved going there since our cousins were similar in age to us.
My younger sister and I were playing original Nintendo with my cousin in her room with all the lights and sound off. She had one of those talking troll dolls in the corner that used to light up and really say a few phrases in this muffled squeaky voice if you squeezed it; 90's technology wasn't that great when it came to talking dolls.
The doll was on the other side of the room and the three of us were curled up together at the end of her bed. Then the troll lit up and started talking in a mans deep voice, clear, like he was standing in the room. "Who's there? Who are you?" then just started laughing. Needless to say we screamed and ran down the stairs. You could still hear the troll doll laughing as we ran away.
After that happened my aunt started to tell us how she sees a man often. He is usually in the living room (the room right under my cousins bedroom). She said she talks to him about her problems and her life but he has never said anything back. She said if he ever did she would be out of the house so fast!
I also used to get these vivid dreams when I slept there of their bathroom. I would be in their bathtub filled with warm water and I would then slit my wrists and watch the tub fill up with blood. I would actually see myself doing this like I was floating and couldn't stop it. I could feel the wounds that didn't hurt but could feel the water in them and the steam of the bath. Although I was never really scared in those dreams. I would have that lucid dream for years until they moved.
They also had a 5 point star spray-painted on their basement wall which is concrete. The star was usually seen on the back wall behind the stairs. Except when you would find the star on a different wall or just not there at all. Which isn't possible since its painted on the wall.
There were other things like voices, or feeling watched, or glasses breaking. But those didn't stay with me as much since I would shrug them off.
So I don't have a long story about one particular encounter since I would run away if one presented itself. I don't feel the ghost was mean just enjoyed scaring us a little for fun.