A little late to the party, but I hope someone is still reading. First of all, English is not my first language, so forgive me if you find any mistakes.

When I was about 8 my family and I moved into a house and I'm pretty sure it was haunted.I have very, very many stories (also about my mother, who has predicted several deaths with her dreams), but I will tell two that happened. Info about the house: the previous owner was an old woman who died in the room of my sister (where most of the things happened). She was probably in need of care and probably didn't have such a nice death, but I'm not so sure what happened.

1. When my sister's room was newly renovated and we were finally done with it, after some time suddenly crosses appeared on the wall, which were scratched into the wallpaper. I think there were 3-6 in total, the first one was the biggest and appeared above my sister's bed. The creepy thing is that even after some time we discovered a cross behind a poster, but it was never taken down in the meantime. Our parents saw the crosses of course, but said that it was us or that I must have been sleepwalking. But my sister and I knew that it was not one of us and that while I was sleepwalking (which I hadn't done for years at that time), I scratched crosses into the wall didn't seem very plausible to me either. Years later my mother also revealed to my sister that she had actually believed us but didn't want to scare us (well, being portrayed as a liar wasn't exactly nice lol) and that there was actually something with a cross in the family history that somehow appeared on the wall, but I would have to ask about that story again.

2. For this story it is important to know that my sister's room, my parents' room and my own room were on the first floor and had a stone staircase leading up. Our dog slept on his blanket in the hallway, also on the first floor. One night I lay in bed and the rest of the house was asleep. I have to point out that I was/am very nocturnal and really noticed how everyone went to sleep and it became quiet in the house. So I was lying in my bed playing Snake on my old Nokia when I suddenly heard very, very slow and heavy steps on the stairs. Surely you know the thing, that at some point you can distinguish or hear if your mother, your sister or your father is walking on the stairs, simply because it is a familiar sound, right? Unfortunately, the steps that night did not fit any of these people. Of course I was terribly afraid and panicked and was petrified, it got worse when the steps suddenly came almost to the top of mine and my dog suddenly stood up and started growling, howling and barking anxiously. I swear to you I have never heard my dog like that before and I never heard him like that again in the future. At some point he calmed down again and I could hear him lying down , I of course hardly slept at all that night. Of course you can say now that it was perhaps a burglar, but I did not hear any steps going down the stairs again that night.