Where do these homicidal ideations stem from?

I'm unsure. Hopefully, I'll be able to discover that through therapy.

What do these homicidal ideations feel like?

Hell. I want to hurt people, I get the urge to do so. I also have obsessive thoughts about killing both people and animals. It makes me feel terrible and I usually keep it to myself for fear of people viewing me as a public danger despite me having never acted on the urges.

What do you use for coping mechanisms?

Sadly, nothing. I kind of just... exist. I don't want to use fictional media because I'd feel ill, like for my cannibalistic desires. I also don't talk about it with friends often because I get insecure. I'll find something, eventually, I hope.