needing advice?

hi, my name's leo. I'm not sure if this is the right place to post this, or if i'm just overreacting over nothing out of the ordinary, but i've been feeling kind of freaked out/confused about what i feel like is going on in my mind, i think? i'm not sure i'm sorry

anyhow.. for the past couple of months i've been feeling more paranoid about the intentions of the people around me, i get a strong feeling that they really want to hurt me and i try to keep an eye out when i'm out and about. i'm still in high school and during the school year it was bad enough often enough that i had to find a quiet place to go to get away relatively often because i was scared.. now it's not as bad since i'm at home but i feel afraid when i leave the house

also, i don't hallucinate much but in recent weeks i've been doing so i think? like a door banging but no one is there and someone calling my name (no one else that was around heard them but im not sure). there have been a couple times when i could strongly sense some sort of malevolent presence nearby but i couldn't see anything, i thought it might be there to serve some sort of punishment. i also end up dissociating pretty often for whatever reason (a little less than before i think). also, i've been having issues with self-harm but it's not that bad i think.

to wrap up.. I understand that making diagnoses on other members are against forum rules, however i would like to ask for advice in dealing with these kinds of things? sorry i'm just sort of confused, im not even sure if this is common behavior/mindset to have. thank you!!

again, any advice for dealing with this kinda stuff? also, last night i could sense people in my room that I couldn't see and it was difficult to sleep, i think there were four of them and i knew they wanted to hurt me