I'm 21 I'm about to go to college for masters after a 2 years education gap. It's in a new city and i will be living in a paying guest situation. I'm loosing my mind here wondering about how I'm going to survive. All these years I've been getting through school and college by not talking not making freinds bcoz i have my little amt of freinds that i count on so i never felt the need to socialize much with others. Now that in going to a new city and leaving my comfy friends behind I'm just panicking bcoz idk how to talk to people without overanalyzing everything i say do and what they say and do and it affects me so much its really draining. In not officially diagnosed with anxiety or anything at because i  can't afford a therapist.
What should I keep in mind while talking to new people? How do I make conversations? 
What to do after the general hi hello? Where are you from?

One more thing I'm really terrified of is eating. I really hate eating alone outside and I'm scared of i don't make any friends i won't be eating at all it's not like i can escape back home for lunch like i did in the past. 
How do I know I'm friends enough with someone to sit with at lunch? What to talk about during it what if there are uncomfortable silences?
I know I'm basically ramling here but please help my college starts in 11 days and im a mess the stress is making me breakout and have hairfall 🥲✌️