I feel so disconnected

Encourage you to be observe my classmate, be confident and chat with them. Find someone who have similar interest with you.

You can also join some interest class and do voluntary works in weekend. You may know new friends through them

Here are a few tips for you,
1) Try to connect to the deeper meaning of what people say- What they say, in terms of what words come out of their mouth, is just a tiny fraction of what they are communicating. The real message is not what they say. The real message is why. Where are these words coming from? That why is what tells us who they are and what they value. The speaker is rarely just trying to relay basic information to you. Almost always, they are speaking up because there is some visceral desire to express what they are feeling right now. Speech is always triggered by a passion, a worry, a judgment, a realization, or some other internal encounter with an emotion of some kind. If your friend suddenly brings up her job, it isn’t because she wants you to be well-informed about her situation at work, it’s because her job is on her mind and she wants to get it out of her mind. Respect that need and she will not only be grateful, but suddenly she’ll be much more likely to take an interest in what’s on your mind.
2) Allow the speaker to be the star- Really, really listen to what they say, and recognize that they are saying what they’re saying because it is important to them. In every single thing every person says, they reveal what they value. When you can get a glimpse of what people value, you can see the humanity in them. And that is how humans connect: by understanding each other’s values. You don’t have to share those values, though you’ll certainly find you share something with everyone.
3) Cut down barrier- Forget what you want to say, just drop all thoughts about yourself and your interests, and let them speak their mind. Think of it this way: when you are listening, the most important thing in the world is to figure out where the other person is coming from. Make it your entire purpose on earth — for the thirty-seven seconds it takes for them to tell their little story — to understand what feelings are behind what they say. If, when they stop speaking, you still don’t understand where they’re coming from, ask a question.cherish other people’s desire to express themselves more than your own desire to express yourself, take turns understanding each other, but insist on going first. .The truth is, your opinions probably aren’t that important. And neither are the other person’s. Opinions will come and go, they speak mostly to our emotional state at the time we declare them. There is usually very little logic behind them, just feelings. And that’s okay. There is a brilliant Zen saying: Do not seek the truth, only cease to cherish opinions. This is not a prescription for dismissing what the other person is saying, only for cherishing the human being behind the words, rather than the back-and-forth play of semantics and mental positions.

Good Luck