talk about the time when you accomplished something you did not think you could do. what did you accomplish?

It is not right on the topic. Need to talk what did you accomplish exactly, for example, you got a full mark in a math exam. then talk how did you do that.

The sound is low. Adjust the input volume to maximum during recording.

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Try this pattern for Q1-Q2:

first 1-2 sentences: introduction. my opinion: A or B. agree or disagree. about 5-10 seconds
First, reason 1 and the example: about 15 seconds
Second, reason 2 and the example: about 15 seconds
Third, reason 3 (optional)
Conclusion: Don't need a conclusion. (you can have one only when you don't have something to talk about)

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you need to direct your speech more toward the topic.