Smaller Numbers after Self1

#1

I have applied merge sort only while solving the question, but still 2 test cases show TLE. What is wrong with my code?
Here is the link to my code-

#2

Test your code here https://leetcode.com/problems/count-of-smaller-numbers-after-self/ and check once.
Check if it works there.
If it does not work then please add some comments to your code and then share its link

#3

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