What do y'all do in this situation?

Throughout of this term has honestly made me super uncomfy and somewhat I feel this indescribable disgust that I can't explain. I'm still traumatized from last year, when someone had a crush on me and literally won't stop staring at me, he went to such an extent that he would stalk me and at the time that I told him my boundaries and that I have no intention of accepting his feelings , he manipulated me by self-harming and showing it to me. No words could describe how I felt so guilty by that...I apologized and bawled my eyes over it..but he used it as a tactic to keep me talking to him(by chat ofc) but I eventually realized it's not my fault and friends helped me. They threatened that I will warrant a restraining order if he won't stop and slowly by slowly he actually stopped.

But now this term... it's like it's happening again and I'm super fed up.. there's this another boy with the same patterns as him. Every moment he actually faces me and smiles cringely at me, yk that Tktok acc that @Kyra Marie that posts vids about a guy who can't take a hint, THAT'S HOW HE IS..