What can i do ? why im like this ? help plz ?

ok first i born in a perfect life, great family, great face, great body, money, education, im good at sports, all the girls say that im very good looking, wow that sounds great, but im bad at academics, well doesnt sound like a big problem, ok now im a very very very shy guy and i have always being shy all my life, with all cousins, in schools, in all the places i go im shy, but when i was growing up like 9 10 11 12 13 till 15 everything was great, yeah a little bed shy, but at that time i made alot of friends, girlfriends i went out with friends, movies, trips girlfriends, etc... its was great, but my family dicided to come to usa, now im 21 and my life sucks, i being moost of the time isolated, seens 15 till 21, i dont have friends, no gf, i cant even go out to buy a cigarrete or a drink to the store, so i was looking in the internet and i guess i have social anxiety, so is very very frustrating very sad, depresseing, i always wake up with a very annoying felling, i feel it in my stomch, angry, frustrated, and afraid of the future, and being trying all kinds of help shpyquietrist shpycologist everything but nothing seems to work, so at this point i feel lost very lost *** fck fck fck fck fck whyyyyyyy? i drop out at age 16 i finish 8 grade and thats it i cant go out, i feel numb is really hard, help me o and sorry for my english im from venezuela.