How to hang on in a bad workplace environment while searching for the next great opportunity?

When I first on-boarded into my current job, I thought it was the best thing to ever happen to me. It's in one of those trendy new tech industries, and everyone seemed great to work with at the time. After a year in, my local org went through a lot of change. Many people left, and new replacements have been coming in faster than we could spend money for the project. Even my own boss left, and the guy that management chose to replace him has a management style that does not agree with our team, as well as other teams. Between the new boss and the new people, I feel as though the culture of what was is slowly slipping away, and the new one is full of pressure and blaming, as well as an attitude that looks down on those who are younger (mistakenly equating it for inexperience) and female. I've never seen HR and management ignore multiple reports of misogynistic threats and rude remarks so consistently before. I've already made my mind up to open up my search elsewhere, to a place with a better track record of keeping their culture intact through changes, as well as overall a better job opportunity because I know I am capable of so much more, but how do I grit my teeth and suffer through the pain long enough until I find the right opportunity? It definitely seems harder every day now.