I don't know what i am doing wrong can someone please explain this to me and help me solve this please

my professor wants it to be able to work for a large input list; This is my 3rd time asking for help and I have edited for my professor and its still wrong. can someone please help me

5. (10) Create a function called occurs_n_times which will take as input a list L, and a positive integer n and will return True if there is an element in L which occurs n or more times and False otherwise. In this problem you may not use imports and you may not use dictionaries. You may use any available operation on lists though. Your function must run efficiently and will be tested on lists with many elements