Wow, so much …
I would say: You are loved. And get the thyroid meds NOW at once immediately, it’s not necessary that you feel like a lonley depressed doll nobody wants to play with. That’s hormone induced bullshit and can be fixed easily. You will feel like a new person within 3 months!
It’s perfectly ok to enjoy yourself with a book instead of disco.
You love water - when you’re going out, drink water. Beer doesn’t do any good for you and you’re quite an idiot when drunk, not cool. Besides: it makes you fat. Please don’t become fat as a walrus, you will regret it like a living hell.
GO TO SLEEP WHEN YOU ARE TIRED!
You need looots of sleep. You miss nothing when leaving early instead of turning off the light at a party. You even miss nothing when you stay home instead to be honest. Never did. You are grumpy and feel crappy when you stay up late. Nothing interesting ever happened after 9 pm! But a lot before 6 am 
It’s ok to be shy, no need to talk a lot. When you drink alcohol you become a chatterly goose and people don’t see how sensitive you are - that will hurt and is preventable. Be kind to yourself, I love you!