My bad I'm sorry and I may speak in à weird way because I'm not a native english speaker. So I had the habit to completely scan my phone a lot and basically I knew approximatively how many files I had on it like that. What I was trying to say was that the files appeared in the memory of my phone, so I thought it was coming from an application. So my guess was that the files were going into the system because I checked everywhere but couldn't find them and I can't access my system by myself and tbh I didnt know how I could do it from my files menu in my phone. After seeing that rougly 150 files spawned in the antivirus scan, I rechecked for a while trying to find them and to my surprise, 800 files got deleted. So I'm not the best when it come to this kind of things but I never saw that beurre and just panicked and reboot my phone. While he was rebooting, I checked my genshin acc on my dad's phone and my account name in the security settings changed to "Mer". Right after that, I went online on my playstation account and nothing changed. I'm the anxious kind and thought it was weird but when my phone was good to go, I checked my account and my name was the same as usual. So I had the idea to see on my Mother's phone this time and to my surprise, the name was "Mer", like on my dad's phone. Hope it clear things a bit, sorry if I make mistakes in my spelling or my sentences, Im still learning english and there isn't any community in my language that could help me beside this one :/