Struggling with thoughts of hurting people and cannibalism

(Nsfw tag because it might be graphic)
This is a burner account, since i don't want to risk anyone i know finding out about this

Onto the actual thing: I'm a 16 year old male, and I'm struggling with thoughts of cannibalism and hurting others. I have not done anything to harm anyone or eaten anything despite of these thoughts. I have had these thoughts for most of the time I can remember, but it is only recently starting to freak me out. As a kid, I never really saw any problems with hurting anyone, and I still don't really feel anything when i see people get hurt, but i knew that hurting people was wrong so i never actually hurt people on purpose, but i just did not understand why. I have also seen no problems with eating human flesh if I had to, or shown any reaction to gore in the past. It has gotten to a point that without even specifically wanting to, I often think of cutting up and eating people i dislike, my classmates and even random people i see on the street. I know that its wrong, both with hurting people and eating them, and i want to be 'normal', but no matter what i try to do myself, i cant stop the thoughts, even giving me urges to try something, but i haven't. The feeling i get when wanting to eat flesh is kind of like the feeling you get when you see food for someone else at a restaurant, the feeling of your mouth watering, but you know you cant get it. Its a creeping feeling I get that I cant shake off, often finding myself thinking about it when I don't pay attention to just what I'm thinking.

I'm just looking for genuine help, or tips on how to handle this. I haven't told anyone I know, because I'm afraid they will look at me differently or just avoid me in general because of it.