Part of succeeding in corporate (and not hating work life) is knowing who to go to to get stuff changed. Even companies with shitty culture still want to improve things since that usually makes the profit go up. Using their own greed to improve things is a manipulative art. If you’re doing that already then congratulations! Most just wallow in their situation instead of changing it (which is in their control).
The best you can do is look for a company who has a great work culture. Then you can really help foster change without being in management since management will be open to better ways of doing things and should actually listen. At least if your idea is shot down you usually get the why behind it and are now apart of the chain of decision making, giving you ownership.
Just don’t get suckered into a company that says they have a great culture without actually having one. Read their mission/culture statement. Missing servant leadership? Missing customers and employees at the core of what they do? Talk most about shareholder value? Talk about intense training? Red flag city. Avoid if you can.
Sorry if I’m on an unrelated tangent to what you’re experiencing. I ran into this the other day with an interviewee and holy hell, I could see why he was getting out of that type of company. Utter BS culture statement.