If you lack of money and live from paycheck to paycheck, it means you need to find a high paying job first.
Even with a high paying job, you're still going to have a hard time being able to maintain an investment with just one cashflow, what needs to be done besides finding that high paying job is for you to learn other trade skill or any service related skill and then try and capitalize on what you learn to make another cashflow but make sure that your side work doesn't interfere with your stable job because it's going to take a toll in your body and mind which is disastrous for you. Bitcoin isn't an overachiever, in my opinion it's more like it's not meeting people's expectations when it comes to price that it should be right now, some wants it higher while others don't want it to be that way but here we are, bitcoin being branded as an overachiever is a sign of perfection and bitcoin isn't a perfect thing.