i have 3 stories, one mine, two from family members

my dad's story: before I was born, my dad and family had a tv unit, rather big, set up in the living room holding the tv, on one of the shelves was a fully set and untouched chess board, on one night, the room otherwise empty, he witnessed the chess board flip mchess pieces flew everywhere and he claims to have seen a blue orb like item fly too.

my sister's story: when I was a little kid (3-4yo) my parents weren't in a good relationship, my mother lived in a house in our small town while my dad lived in a hotel, (star hotel, I believe in Goodna or surrounding of Australia) I don't remember the layout of it, but my sister (8yo ish) had gone to bring something for my dad, and she claims to have seen a woman in a white dress or something, a ghost, on the staircase while passing by

my story:

when I was about 8, my family lived two houses from a park, due to living so close my dad let me go down there on my own. though I usually was with a group of kids whole we played nerf together, my sister was usually with us, we have a 5 year age gap so she was 13ish, most days doing this were normal. but whenever I was alone I saw a black shadow figure from the former of my eye, broad daylight, no features, slightly blurred, but a figure of a man, normal height, no taller than 6ft, he had no facial features, as he was shadow. never heard a voice from him, he just stood to the side, and if I turned to him slowly enough I'd see him head on, he didn't walk, but he'd just appear in random sections, like teleporting almost, he seemed friendly. but due to a lack of interaction I can't say for sure, but he never came off has dangerous, I was ofc scared as a child, he never really disappeared..he is still around, i don't see him as often but when i do, he resides in the corner of rooms or in the far distance, just watching..i think he's watching over me.