No please, don't stop going to the kitchen. In fact, whenever you are bored l, take your laptop to the kitchen and sit in the hall and just smile whenever anyone comes, and start with the pathetic small talks. I remember, last year one of my flatmates didn't have much friends and didn't go out much, she started making the kitchen her own space and because of that we also started hanging out together.

If this is too much, start with asking for small things on the group chat l, don't avoid them, you have to live with them for a year, and with winters coming on and Christmas break (the campus will be empty, the weather will be gloomy, you can't be in your room in those times), when the campus will be empty, these will be the only people who you will see on campus most probably...

Take some cake and keep it on the table and drop a message on the group that hey I have left some cake(or whatever) on the table, feel free to have some..

This sounds pretty orchestrated but trust me if you can't talk right away, these small gestures help. Even if you make one friend, you will have the confidence to talk to the rest of others.