I found that to be true as well.
One thing that really helped me was getting honest with my doctor. REAL honest. And it wasn't easy.
That was some time back and I can tell you that now I am sober & happy.
I was stuck in this thinking that the drinking wasn't causing my depression. It was my depression that needed to be fixed and then I could drink normally. I was lying to myself. It took me a long time to figure that out.