i cant make friends x_x

no one ever tells u how hard it is to go to a new school in a new country and not know anyone. i talk to people but they don't want to talk to me. and sometimes they're very hot-and-cold (they're approachable and friendly one day and cold and stoic the next). i don't know what to do. i don't even have friends in my old school. and now i want to make friends but i don't know how. aughhhhhhhh... x_x