As so many posts here attest by a collective hundreds of years of experience;
You can't make him change. He is an alcoholic. The alcohol has a grip on him, and you wishing it would be different is just hope. You have to learn to live with it, in your own way. Or you leave. Living with them is not fun, but some of choose to soldier on with these people in our lives. Leaving is not easy either. But in long run, looking back 20 years from now you might be glad you left.
I'm still looking for that post by the SR member who left their alcoholic, and discovered their life was more difficult without a drunk in in it. Yes, I'm sure the first days or weeks were tough, because we fell so bad about "abandoning" them.
They seem to do just fine without us.