Help

I probably wont get a lot of replies right now as it is damn near midnight. But my anxiety is so bad right now I can feel a sinking feeling in my chest. Im trying to be an adult and communicate correctly with my SO, but it never ends well. Our relationship is toxic and Im still trying to fight for it and fix it. How do you know if its still fixable ? Is what Im doing now going to be worth it ?! I dont want this conversation to go left so Im gonna try my hardest to contain anger and be level headed.