i'm really unfamiliar with reddit and with subs in general, i doubt this is even the right place to put this but i'm so scared and worried i'm just hoping for something.
i had a random just made account like one of my twitter posts, i had a very small account (7 followers) that were all ppl i knew, and 2 of which were mutuals of someone i know. i didn't think anything of it at first, until i opened the app again today and saw in my notifications that the account had changed their pfp to match mine, and even matched their banner to mine. i blocked and changed my handle, the account immediately took my old one. they had a post that they tagged me in, and the post was a voice message of someone i know. that person believes it's a voice message they sent to me, though i'm not certain.
before this i've received two threatening text messages, 20 days apart and from different numbers, but from the same person. they were from a guy i knew on discord, and spoke to mainly on snapchat, for a couple of months. i only maintained contact as long as i did because i grew fearful after a couple months, and ultimately blocked him when he sent me a long paragraph threatening to tell my parents about my behavior (blocking him and talking to someone else, we were never together in any capacity and he had a habit of leaving me on delivered for 16+ hrs after nearly every message and only began expressing more interest in me when i stopped answering frequently). he texted me a couple of days after that once again threatening to tell my parents, i blocked the number on my own phone and my parents' even though there was no reason for me to believe he had their numbers. i never gave him my full name, he had no social media of mine except for discord and snapchat, neither of which include my full name, my discord is linked to an email that exists exclusively for that discord account, and is linked to my old out of service phone number.
i have no idea how he would have found my twitter account, let alone got ahold of the voice message, which is really my biggest concern. at first i worried the account may have been a woman trying in a very scary manner to warn me that the person i am talking to was talking to her also, but since the creator of the voice message says it's a message they sent to me, i'm thinking it must be the guy that's threatened me otherwise.
i'm so scared and lost, i've never experienced this before and i don't know what to do or where to begin. i've changed passwords, but beyond that i'm not sure what to do.
if there's any advice i'd be extremely grateful, and i also apologize if this is the wrong place for this or getting anything wrong