i took my breadth as intro to human behavior , am i cooked

i am trying for other breath courses in hss , but no one is accepting , i am mailing them , they are telling its too late its already full and all , what do i do ?? is there any easy and scoring course that i can visit the prof after going to campus and talk , or mass mail them , i have no clue what to do , everyone are telling this intro to human behaviour course is fucked up and maam is bad , what do i do ??