What happened with my friends?

Things have not been going well this year with several of my friends. Last year I had 2 best friends. I considered them my closest friends and I know they considered the same for me. With these girls we did almost everything together along with others sometimes, but us 3 were always closest. I met them last year and they new each other from before but not that good until last year. This year the 1 left to continue her studies in another country and since she left she cannot call us because it costs too much according to her mom. But when I was in that same country for vacation over the summer I called every chance I got. With the other girl we’ve really drifted apart. She’s shown me she would rather do other things be with other people that I don’t fit with and don’t appreciate me and when I introduce her to other people I meet she can’t seems to not like it. Like she can make new friends and it’s all right for them not 2 like me but I have 2 be with them 2 be with her but I can’t make new friends because she can’t stand it. In the meantime a whole other thing has happened with this other old friend of mine from highschool that has made me feel so shy and as if I’m scared of my own shadow. I’m already a shy and quiet person. Why am I starting 2 feel so embarassed about myself for no reason? Just walking around alone and sitting in class these 1st days of the new semester. And not doing well at all in my favourite hobby that I love-dancing lessons. If I quit them what will I have left for enjoyment?