I wish I could just rely on someone in this world.
I know that feeling. And I also know that what I'm going to say isn't going to hit with you right now - but maybe it will tomorrow, or the next day.
You have it within you to take care of yourself. Yes, at times, that feels like a sad thing, and it feels really bleak to contemplate when you just want someone to rescue you or take of you or even just care about you especially in a helpful way.
But if you let go of wanting that and reconcile with yourself, it will be OK. And if you can start pushing yourself forward, and see any traction at all (which might take awhile), the things you're currently missing so acutely will recede in importance. I don't mean "just get hard and bitter" - I mean the opposite of that. I mean that if you can detach from those painful wants and start living without resentment or yearning, you'll be freer and have the mental bandwidth to optimize your situation, whatever it is. You'll be able to set and move towards goals better when you let go of the wishing and wanting. ...I'm not saying you're doing anything bad or wrong by having moments of despair. That is very, very human and natural. But detaching from things you feel you most want - even if they seem essential or desperately needed - is a step toward actually developing greater capability to handle the stress and strain of dealing with life, even when life feels horrible.
This is essentially a Buddhist concept, and it can be deeply changing. Buddhist thought says, "all life is suffering.". That is the first of the Four Noble Truths. But the context of that is the Second Noble Truth, which is that desire (wanting) is the source of suffering. The Third Noble Truth is that cessation of suffering comes with cessation of wanting. (The Fourth is the specific Buddhist steps (the eight fold path) to enlightenment.). The eightfold path (the "how" of getting to enlightenment) may or may not be the path for everyone, but the first three Noble Truths truly do describe the experience/ cause of this kind of pain. And to be clear, cessation of the suffering-causing desire doesn't mean giving up or numbing out. It's the opposite, really. And the point is not that you're bad or at fault for being unsettled and upset. The point is that detaching yourself from that wishing and wanting and can free you to improve and shape your life, even before external conditions improve. ...which sounds like bullshit when you really, truly need a hand, but it is really, really not. Detachment gives energy, clarity, and creativity - which might mean ingenuity in how you solve problems...or even just greater peace day-to-day, which eventually gives room for harder, more focused efforts for goals and stability.
The only person I can go to right now for "help" is a narcissist from my past who will use this chance as a way to abuse me more.
Don't do it. But if you do, do your thinking ahead of time. Whatever the situation, internally you need to be all business - set your goal and do what you must to get it. Seriously steel yourself against the narc efforts (and your own past susceptibility). And if you aren't sure you can go to them without some sort of mental or emotional harm, they delay that as long as possible.
(And btw, if you do steel up enough to go to them without feeling bad or meek or in a victim position, you can say whatever you need to to get what you want. If you can get truly emotionally divested, then go for it. I am typically very transparent, straightforward, and forthcoming, but if dealing with damaging narc who has caused you harm, I am absolutely, guiltlessly for (pro-)
bloodless manipulation mercenary tactics maximizing opportunities for getting what you need and calculating your conversation. But if you aren't able to game it, I would think hard before going to that person. ...the funny thing with narcissists, though, is that once you've figured them out and keep that knowing hat on, you can plan and figure out how to get what you need without sacrificing yourself. And when you see yourself do it, it feels ridiculously great and empowering. ...but you can't go in without a clear goal and a playbook.
that I have to know every second my life that the people who make life miserable for others can just cruise by in life with no real consequences and the people who try the hardest will be fucked over every chance.
This is stuff to let go, to the extent that it distracts or interferes with your life or any piece of it. (And ideally, whether it does or doesn't)
Many shitty people succeed. Sure, it's not right and not fair. But even when their success has had negative consequences for you in the past, you will go farther faster when you detach from all of the feelings around it. It might feel like letting it go is another win for them...but it's really lifting a big burden off your own shoulders.
Spend some time, if you have it, on understanding what detachment is and on practicing it/processing the feelings out. And then you can develop an approach - to life, to them, to whatever - that is rational and focused and that you can put all your energy into.