Weight problems and Im only 14?

Okay Im 14 and i wanna lose weight i weigh about 160 i wanna get down to 130 or lower, plus i wear a size 11 shoes size so its really hard for me to shop and stuff,its like every time i get around family its like dang u getting fat and goodness your shoe size is huge,my cousin was like u so fat when u sat on a rainbow u made skittles,its like they dont know what i go through on a day to day bases i live in a city where if u walk out the door and go outside u at a fast food restraunt thats all i have where i live,Then my older sisters are like u need to dress more girly i aint no tomboy i dont think i mean it aint like im wearing boy clothes but when i do find stuff that i like its either too short or to tight i need help on that, and my shoe size omg i got a big foot 2 be 14 im tall so i would expect that all i see is grandma shoes in my size then if i find a shoe with a stumby hill its like can i have this and they like u too young or something come on now its a stumb hill like 4rl.ANYWAY YALL CAN HELP ME HELP. PLEASE