I was in almost your exact same situation about 8 years ago. What I did was start looking for leadership positions outside of work. I became a CrossFit trainer, president of my HOA, and for a short while started my own business.
A friend of mine offered me an opportunity to lead a small team at a start-up, and I joined even though I made less money. I actually went back to being an IC after a few years because I didn't like managing at that company, but a few years after that, I had the chance to manage a team while the director was on paternity leave and I really enjoyed it. By that time, I'd read enough and had enough experience to get hired as a manager. So I changed jobs to manage a team full time and have enjoyed it since.
