Someone is playing a psychological war against me online and idk who

Im a (22M). Recently, someone has been trying to get into my instagram account. Every day for weeks around 19pm and 01am, i receive instagram codes. i didn't request. I didn't mind it the beginning

But it when i receive it every single day at a specific hour

It started to make me overthink and scared sometimes

I added to my bio a message to try to figure out who's this person was (high chance it's a girl) . I know from the hours he's doing that, is that he/she works and when he/she got home. He/she just did this psychological thing

Should i delete my account