Help me plz with middle school?

i really need answers plz. im 12 and a half and i just left a school. they threw me a farewell party. and my situation is i might be going again to that same school next week! idk what to say or what to do! the total bill was $72! i cant buy anything and i dont have any excuse. plz help me. ill be the total loser at my school! when i sent the email to my so called friends they never wrote back to me again! plz plz plz help!