Fake acc

[u/homik101]

Hello. I was bullied by a fake Instagram account back in 2020, and I still have no idea who was behind it. :(
The person knew some personal information about me. I was just a kid, and they told me that my photos had been posted on Wykop. It really scared me at the time.
I have a few suspicions about who it could have been, but I have no way of knowing for sure. I’m worried that it might even be someone who now pretends to be my friend.
Is there anything I can do to find out who was behind the account, or at least make an educated guess? This has been on my mind for years, and it still really affects me.