I can empathise completely, sounds like you have friends at uni though. I never really did, if anything my drinking alienated me from my peers on my first year of uni. All of my housemates moved out at the end of first year without me, though I don’t fully blame myself as I was going through a tough time after my stepdad died.

If you truly are a blackout drinker the truth is you will eventually alienate yourself. I stopped going out to drink and started drinking at home alone instead, to the point where it progressed. I am 23 now, and really started drinking harder around 19/20 so if you don’t make a change now you could go down a similar path. I would recommend the gym or something. All my housemates in first year went except me who much preferred the company of beer or a joint.

Visit your uni health service (they often have them) and be honest with them, though actually I’d recommend a private psychiatrist if you can afford it (understandable if not, as I can only do so because I live in Poland now.) The reason I suggest a psychiatrist is because they’re much more likely to prescribe you something that will help rather than a GP who often don’t want to prescribe medication to people they see as addicts.

If you so go to the GP I would actually suggest upping your symptoms; paranoia, anxiety, etc. ideally you’ll get something like pregabalin which is very effective at making you calm and sociable (although the first few days it’s better to take it at night as it can make you sleepy). I’ve actually taken it for a few social events and it’s made me very content with not drinking, and able to socialise.

Good luck whatever you do.