I wish I had known that the job market would be a total dumpster fire! It was already heading in that direction when I was an undergrad, but my professors said don't worry, they'll all be retiring soon, so surely there will be lots of teaching jobs at universities in the future...unfortunately that wasn't the case. There are too many students become historians and all looking for the same jobs. It would be great if universities had enough positions for everyone, but that's not going to happen (for one thing, they figured out they don't need to hire one person forever, when a constant stream of people will be willing to do the same job short-term for way less money...)

Personally, I work as a translator. That uses a lot of skills I learned in school. In my spare time, I can still do all my fun historical research. I'm an "independent scholar" or an "alt-academic" or whatever other names we use these days.

For questions like this, I always like to include this of jobs that my friends from school have: aside from the few who actually did get to be university professors, there are translators like me, people who work for publishing companies (in academic or popular presses, as editors or salespeople), novelists, journalists, lawyers, priests, politicians, librarians, museum curators or guides, elementary/high school teachers, musicians, actors, therapists, economists, some people joined the military...I'm sure there are others I'm forgetting. Not all of them still work on history stuff or consider themselves "independent scholars" but some do. So there are plenty of options, as long as you don't expect to be a tenured professor at a university.