I believe we have to meet our own most basic needs in order to have strength to help another. You have been depriving yourself of some of these needs.
Your wife obviously has some serious mental health issues driving the alcoholism. Whatever your course of action, you absolutely must take care of you first or you will soon be unable to care for her. That means your physical needs as well as your emotional needs. Leaving the house is a need. It's imperative that you make changes because if you simply cannot keep up this unhealthy lifestyle forever. Your time is precious.
Making changes is going to be very difficult, and she is going to kick and scream when you start doing the things you need to do for yourself. I hope you will keep posting here and search for other in-person options for support or counseling, also.
Peace and Strength to you. Really glad you are on this forum.
Hanna