I've never been so scared in my entire life.

3 years ago, I was alone at home (my parents were out shopping), and I was watching videos on YouTube. That day (around 11 a.m.), I heard something fall in the hallway. I look, and notice that it's medicine. My parents arrive, and I ask them where the medicine was. They tell me that he was in the medicine cupboard (which was half-open), that he was at the back of one of the floors, behind some medicines. It was summer, there was no wind, and even fewer windows open. A week later, alone again for the same reason watching YouTube, I hear a door slam on the floor above (because yes I was on the ground floor). My dog ​​who was with me, ran into my room (maybe out of fear), which he never does. Then I hear a switch go wrong, then another door, and another, and it wouldn't stop. About fifteen minutes later, things calm down. My dog ​​sticks his head out of the room, looks left, right, then goes back into the bedroom (weird). And it starts again, the doors, the switches, the INTENSE stress of my dog ​​and me, and after a few minutes which seemed like an eternity, nothing. I call my father, petrified, who tells me to go upstairs and see if a window is open. My dog ​​sticks his head out, looks around, then leaves. I go out too, I go upstairs : no windows open, and no lights on. The doors, for their part, were haphazard, even though they were all closed at the base. On the day of this event, I was 11 years old. And if you have any rational explanations, I'm all ears.