Which is more harmful: Isolating or Talking to people as I would normally?

Hi! For some context: I've just recently decided that I'm going to try and just like. Not talk to people. I've been tired as of late to a degree that makes me want to shout and cry and just break down, and I'm so close to lashing out on people, but I still have to be there. Unfortunately people still need to be tended to and I still have to talk to them. It's a pain. I want to lash out at people for once but I also know that's going to hurt them, but if I'm also going to self isolate that's only going to make me miserable and be consumed in my own feelings. What should I do? Is this destructive? Any coping mechanisms? Don't say I should talk to someone close about it, since I'm also really extremely angry and paranoid at the thought of doing that since they're so busy and I'll only be talking about myself. Please, just tell me SOMETHING before I actually make up my mind on this.

I don't want to talk to people because I'm so angry at them---at how I still have to demand attention---but I have to. What should I do? Therapists aren't a viable option. I don't have cash. If I talk to people normally I'm only going to bubble up, but if I isolate I'm only going to grow more hatred. I know they're all busy---that's the reasoning I've been using for 3 years now--and it's annoying how my feelings react to this.