I'm 27 and can really relate to the feeling of depression. I have diagnosed mental health problems and the medication was ineffective the entire time I drank, so it has taken time for me to feel different.
Not drinking day by day, hour by hour and breaking it down might help.
Alcohol bought no relief to me, longer than maybe an hour or two of numbness, then the anxiety and depression came back with a vengeance. It's simply not worth it. You don't need to live like this.