I need help... because i dont get why... =[?

okay.. hi im angela and im 15... i have a problem... i moved from honduras to united states 4 years ago... and i stil havent get used to the culture here... and i feelll sooo lonley... like i one have 1 true friend.. and i feel so depress when i get home.. and i mean i dont wanna sound selffish but i dont ger y i dont have many friends... im very pretty.. and im really friendly ... i just feel sooo alone in this country.. what should i do in school to become friends with people.... or what should i start doing?.. idk wat to write here,, i just need advice