The obvious answer (new job) being off the table, have you had a look at the philosophy of Stoicism? It's about recognising the boundary between the things you

The obvious answer (new job) being off the table, have you had a look at the philosophy of Stoicism? It's about recognising the boundary between the things you can control (your opinions, your actions) and the things you can't (everything that everyone else does) and thereby come to some peaceful coexistence with a chaotic and challenging world, and also learn to handle difficult situations in a constructive (to your mental health) way. I think this would be a good fit for you in dealing with your stress over your lack of agency (e.g. "I see so much wrong but I can't do anything about it." - indeed you can't and the problem you have correctly identified is not that per se, but how you feel about it).