Hunter, for at least as long as writing has existed, one thing has been true about being young: you can't learn by simply listening to your elders, you have to learn things the hard way, all by youself. So don't feel bad about anything that you've done. Life just "dropped some education" on you, and all in all you're quite lucky to be where you are.
Please, please don't think you can just stride out there with no knowledge, money, credit, network, experience, or credentials and just be a success in real estate without some kind of day job.
As has been said already, you need to have income to have good credit. And without a stable income, you are under a lot of pressure and will undoubtedly make *bad* decisions. (BTDT). So spend your time now working on your RE education, but also on getting a day job.
It sounds like you may have seen the light on this one, but just in case: spending money on consumer cr@p is the road to poverty and dependence. The janitor who empties my trash drives a newer, shinier car than I do. He will die poor. People here toss around $200/mo as a good (great) net cash flow on an income property. And those all have risk. If you can reduce your "needs" by $200/mo you have accomplished the same thing, and more.
So what is step #2 (after getting that job) ? I'd say house hacking. Maybe you can't find a duplex/4plex, but you can aim to buy (or even rent) a house and rent out rooms. With your housing cost reduced/eliminated you have an engine of savings that can take you to the next level. Old people with spouses and kids and reputations and whatnot don't always have that option.
Good luck to you!