I'm sure people will have a bunch of feel-good suggestions here.
Want a good dose of reality from my perspective?
I'd say suck it up, then move on somewhere else and hope that it will be better.
I don't mean be silent either. But don't try too hard to fix things or be the voice of reason and things like that.
Very very few cases like that see tangible change from the inside.
There are often much deeper rooted systematic problems present. And in many cases there's no interest in willingness to "fix" any of those problems in the first place.
They may express interest in the outcome of the fixes (better stability, etc). But ... well you will find somehow there's never enough time to actually invest in achieving those outcomes.
Without knowing more about your case I can't be more specific.
But just remind yourself, things don't just snap into existence out of thin air.
If things have been like that where you are for a while, chances are it's going to stay that way for a while longer too.
The current state of an environment is somewhat representative of what has been encouraged, rewarded, discouraged and punished there.
You may be tempted to be the hero that makes things right. You are probably one just like the many that came before you and are long gone.