I think my classmates hate me to think I am dumb

I know this is not really relationship related but I am slowly losing it and in this space where I feel so sad and low.
It’s driving me crazy.
First, I’m in a class where I am the only international student.
Secondly, I switched courses and I am studying something different from what I studied previously.
So I am basically still learning, however I have read a lot already about this field and have learnt a lot so far.
However , it just feels like my classmates think I am dumb and have nothing to offer.
Sometimes I wonder if it is because I come from a third world country and haven’t traveled a lot so they just assume that I don’t know stuff.

I can be hanging out with them and they would be discussing about stuff and asking each other things but they would never ask me. At first I didn’t think too hard but at this point I just assume they think I don’t know stuff maybe cause of where I come from.

We also work in groups most of the time and I’m always left out.
It’s even crazier now I’m in a group with two others and they basically just discuss about stuff about the project and it’s like I’m not there and this is so clear that they just think and assume I don’t know it or have an opinion.
One of them would ask the opinion of the other, implying that they know it more than I do and would never ask me cause obviously I don’t know it or something.
It’s really so annoying how they all just think I’m so dumb.
It makes me feel so inferior and now I just try to tune it out and not think too much but I feel so inferior. I cry, I’m sad. I feel out of place.
I just don’t know how to cope