Hello and welcome.
I can relate. In my younger days I did coke so I could drink more, but I was an alcoholic at heart.
I binged, too. For days some times. Alcoholism is progressive especially when blow is involved.
You're young with your whole life in front of you. Pleases don't waste it like I did.
You'll find a lot of support here. Admitting you have a problem is a big first step, so good for you.
Stick around, and best to you.