Zap said:
Maybe the issue is with me and not my degree.
What's the difference at this point, really? It's not like the degree chose you, or that it happened by accident. Don't get me wrong, you were probably lied to along the way - despite hand waving in this forum about the degree being not a "vocational" one, almost every physics degree website contains glowing remarks about the employment prospects, and you probably had vague assurances from people you trusted that everything would be okay. (And they're probably right, just not in the way you thought).
But still, we've been having the same stories being told in this forum about how awful the degree is for over a decade. More importantly, we've had people proudly expressing how much the degree isn't meant to make you employable for over a decade - and that should be a pretty clear signal. All the info you needed to avoid this problem was available, and this is still where you're at. Don't let that bother you too much, you're in good company here - or at least some kind of company ;)
So starting now, decide to do something different. On the downside, you are probably light in skills considered useful in the modern economy. On the upside, a physics degree is difficult to get, generally well regarded, and the mathematical background can serve as a platform for many other successful careers. Time to start networking, identifying new routes, and testing new paths. Ask around this forum for where people went after a BS in physics and see if any of them work for you. Most won't, but you only need one that will. You're not going to get a single viable solution, but you may get a solution pool from which you can find an avenue towards success.
You've probably considered some alternate routes, but how well did you explore them? Did you know how people get employed in those careers? I think it's great you've sent 100 resumes - next is to make sure you sent the right 100 resumes for the right 100 positions.
Message me if you have any questions I can help with, and I wish you the very best in your journey.