I think im on the path to alcoholism and i dont know what to do

Im 16 and my relationship with alcohol is pretty bad and ive already ruined relationships cuz of it.
My first time drinking was when i was 14 when i stole some of my parents wine and drank it in my room. That became a weekly occurence for a couple months and then i basically drank all my parents alcohol so i didnt have the resources to get drunk, idk how my parents didnt know that i was drinking all their alcohol but anyways. Then i started going out drinking with my friends at 15 but every time i go out i get blackout drunk and its cuz i never feel drunk enough so i just drink and drink and drink. The main reason i drink so much is because i have social anxiety and although im not diagnosed i suspect i might have autism and drinking just makes me feel like i can interact with others normally and not iverthink anything. But recently my first ever boyfriend of 8 months broke up with me cuz of my drinking and one of his dealbreakers was smoking and when i was balckout drunk last week i took a puff if my friends cig and he found out and broke up with me. And honestly im devastated cuz im really against smoking and made a promise to myself that i would never smoke and i did when i was drunk and it ruined my relationship. And this is an eyeppener and im relising that if i keep going like this its going to be a serious problem truthfully im drunk rn writing this idk i just feel lost and alone and alcohol is my coping mechanism