In my last year of uni I shared the apartment with two people: a phd student and a remote worker. One of them asked me if I was home one night while I was in class. They were spooked because something had grabbed their t-shirt in the hall and pulled towards a wall and no one was home at the time. Before this happened, I was resting the middle of the day (as you do); I was awake but my eyes were shut because I had a headache, when I heard steps inside my room. This same flatmate was a good friend of mine so they usually helped me out if I overslept and I had classes. I thought these steps were theirs and I felt a hand resting on my back, so I opened my eyes. There was no one in the room, and in fact the door opened at that same time with my friend telling me that I was late. A few weeks later it was planned for a friend of ours to come visit to an empy room - we had permission from our phd flatmate as he was leaving on a weekend trip that weekend - and we decided to not say anything about the weird stuff happening to our guest, as we didn't was to spook him. It was him, though, who told us very seriously the second morning that we had a ghost. He told us that he had heard some steps inside the room and seen a figure kneel down to hug him. He thought it was my flatmate, his best friend, and our guest jokingly threw a stuffed goose that we kept as a flat mascot to the figure. It went through the figure, that dissapeared through the wall. I lived there for two years, the first one there were knocks in the door and a general unease in the hall area, but nothing as strong as the second year. We are not living there anymore.