How do you start feeling again when you suddenly realize you don't?

21M, unemployed, no legally tracked education past 5th grade, no practiced education since 6th grade, no money, no chance at a job, forced to give away my first pet and the second might be given away soon. First one (tortoise) was necessity, landlord didn't allow it. Second pet (cat) isn't allowed either, but the landlord doesn't know. I'm expected to enroll in college courses but no one is helping me with it and figure out my passion and goal, and I have no clue what to even do with either. My physical health is terrible, severely underweight, plethora of dental issues, extreme memory loss, lost count of the trauma responses, I flinch at any voices, god knows what else. I've been effectively isolated since I was roughly 13, even my own sisters and parents barely talk to me if they even see me on a given day.

It's was getting to me. I used to be scared, then annoyed, then confused, scared again, but today I realized I just... don't. I don't know when it started, I just know I don't feel anything or care about it anymore. I'm already detatching from my cat, which is basically my lifeline now. I know I don't want to detatch or give him up, but I don't have a choice if it comes to it.

How do I even keep feeling at this point? Is there something I'm just missing? Something I never got to learn that'll help? I don't know why I'm posting on reddit about it, but who knows, maybe one of you will have some bullshit advice that actually works. I just don't know what to even do now.

Sorry if it's all over the place, but I can't properly explain everything in one post, hell I probably couldn't evem do it with a whole day face to face with someone.