The ability to leave is the strongest card in any job, relationship or deal. Keep it in your hand.

Almost every bad arrangement stays intact because leaving seems impossible. Once that is true, the other side does not have to be reasonable, and you start negotiating against yourself. Keeping the exit real, even as something you never use, changes what you will tolerate and what you are willing to say out loud.

Ask what would actually happen if you left the thing you are most tied to. Then remove one obstacle from that answer: money set aside, a second option, a conversation with someone who could help. Nothing has to change today, but knowing you could is most of the effect.