Sorry about the bad results for you.
Sometimes people just have more raw talent than you. My nef practices his baseball like a fiend, probably the baseball equivalent of Sir James Galway's flute practicing. Yet there's other young men on the team better than him, because he has few athletic genes from either parent's families, while those others do.
I know it's hard, but try to be happy for your friends. And don't allow being placed in last chair to define your flute playing, or your worth. Only YOU can define your self-worth, not your teacher or your friends or a chair.
Flutes:1975 Gemeinhardt M2 in chrome nickel;1982 Armstrong 80;2006 Yamaha 584
Piccs:1978 Artley piece of crap 15 P;1982 Gemeinhardt 4S;1980s? Armstrong all wood (no model)
Bass:2006 Jupiter di Medici G0199
Treble:2009 Guo New Voice
+ many flute-cousins