If the prompt asks for "advantages and disadvantages," and you only write about the benefits, you cannot score above a Band 5 for Task Response.
If you want to replicate Alex's success, remember these key takeaways from the story: ielts liz writing task 2
Many students memorize complex synonyms and try to change every single word of the prompt. Liz warns that this often leads to unnatural phrasing and lost vocabulary marks. If the prompt asks for "advantages and disadvantages,"