I will discuss both positive and negative aspect of globalisation
If, I am not mistaken, you have mis-analyzed the prompt. Based upon what I know of the original prompt (which you should have provided ) , the discussion instruction is actually :
...its negative side should not be forgotten. What is your view? Discuss.Owing to the actual discussion instruction, it appears that your response is not provided in the expected format. You wither provided a clear % not provided 2 justification topics for the reasoning paragraph. Originally presented as a single opinion statement with 2 reasoning paragraphs this should not be presented via a comparative discussion.
You should have decided whether the negatives can be forgotten or not. It is clear, when considering the overall prompt, that you did not understand the discussion requirements, which led to the low scoring presentation. If you feel I am in error with my analysis, then you should have provided the prompt with you essay.