2 things one has to remember about the first paragraph presentation. One has to do with English comprehension and restatement skills. The other, has to do with familiarity with IELTS discussion questions.
1. This is the section that is scored in terms of task accuracy. It is based on the writer's ability to understand the question, stick to the discussion, and offer a relevant response or opinion based on the discussion instruction. Therefore, the writer should not make up any information just to make the paragraph longer. Some tasks have 2 sentence presentations. Other restatements can have up to 5 sentence representations. It all depends upon the original topic content and presentation. In this case, this should have been a 2 sentence restatement, without the "survey" representation since that is not a part of the original topic presentation. That created a topic misdirection which will result in a failing restatement score.
2. There are 2 different types of agree or disagree presentations in an IELTS test. The first is the simple, agree or disagree response. The other is the extent of agreement or disagreement based on an emotional response. The response for this essay should be the simple one ( I agree with this statement because...) instead of the complex one (I completely...) based on the question provided. The response does not meet the expected response format and will result in a lower than expected response score because of the improper response format.
These are the 2 reasons that the essay will start with a handicap score that will need to be overcome in the later paragraphs if the exam taker is to pass the test.
From my personal experience,
Owing to the fact that the experience is not something that happened to you but to a friend, the reference "experience" is incorrect and will confuse the reader. When referencing the experience of someone else, it is better to indicate "Based on my personal knowledge" to clearly indicate that the narration will be about someone else and not you;
This is a 2 reasoning paragraph presentation. It does not require 2 reasons. What it does require is a concluding summary, which was not provided by the writer hence leaving an open ended essay. The lack of a concluding summary often pushes the examiners to give the essay an overall failing score because the writer showed an inability to present a properly formatted discussion.