As someone who had his aviation career ripped from him when I was your age and waited several decades to get back in, I have to say, welcome to the club.

Your "literally nothing to do" comment reflects a myopic vision of the world and your own abilities. You dreamed of being a pilot and nothing else. Tunnel vision like this is quite typical of the young, unfortunately, but you need to snap out of it and this will likely be the impetus that forces you to do exactly that.

For what it's worth, I wound up leveraging my abilities in technical work and went into engineering. From this perch I watched the aviation industry for the last 30 years endure one black swan event after another. All the while I made good money and stayed involved in aviation in my own way, owning and wrenching on my own airplanes, doing competition aerobatics, instructing, towing gliders and throwing perfectly sane people out of perfectly good airplanes on the weekends. In other words, I lived the dream...which, if it's not obvious by now, does not by default require two jets strapped to your back.

My advice is to go back to school for a useful (i.e. STEM) degree. That will eat up four years, by which time I'm confident the industry will be back, the pilot shortage will be even worse because of all the people who bailed on the industry in frustration, and you'll be able to command a reasonable salary. Best of all, should you choose to come back (and you may not, when you realize the money and satisfaction that can be gained doing challenging work in other industries) when the next black swan event occurs in 10-15 years like clockwork, you'll be better prepared to walk away....perhaps into that side business you were developing over that time in full realization that aviation is better viewed as a part time job vs a full-time career.