What you described is similar to a typical work environment you should be ready for, unless you were born rich.
The worse jobs are usually worse than the average academic environments but the averages are far apart
And the possibility of doing a post-doc somewhere else for another dogsht salary (maybe complementing it with some teaching), then to maybe be able to continue in academia.
just go around YT and see the average opinion on a PhD and postdocs. Or google PhD and "mental health issues".