I can understand and relate to you. But let’s take it as moving back isn’t an option and if we befriend people one or two people around it makes things easier. Do you feel that they judge you?

Sadly It's true. I always feel that they judge me at my every action

Moving to a city might seem overwhelming at first, owing to the various differences. But the truth is, people are not all vicious. Maybe if you open up to them and try to establish conversations, they'll also take a step forward. Firstly you've gotta believe in yourself and get out of your comfort zone. If you've moved to a city, I'm guessing it's either for education or a job. So focus on what you went for. And slowly start approaching your peers, make yourself comfortable. Don't be afraid, take slow steps. Once you start opening up, people might start liking you and may want to hang out with you.

See, if people judge you, then you already know who to stay away from! Don't bother about them and try talking to the ones who seem nicer. You need to be surrounded by people who uplift you, not by those who undermine your self esteem and confidence

Everything will be alright don't worry, about that

How's your breathing issue? Did you visited hospital?