Write about which aspects of the course you find most appealing, such as modules or work experience opportunities.

I need a personal statement as a supporting document for this course: MSc Advanced Audiology course at one of the top 10 universities in the UK. this personal statement should be very comprehensive.

You should tailor your personal statement to fit the course you're applying for, so what to include will largely depend on the course requirements. However, in general, you should write about:

Your reasons for applying for a particular program  and why you deserve a place above other candidates – discuss your academic interests, career goals and the university and department's reputation, and Write about which aspects of the course you find most appealing, such as modules or work experience opportunities. Show that you're ready for the demands of postgraduate life by demonstrating your passion, knowledge and experience.
Your preparation – address how undergraduate study has prepared you for a postgraduate course, mentioning your independent work (e.g. dissertation) and topics that most interested you.
Evidence of your skill set – highlight relevant skills and knowledge that will enable you to make an impact on the department, summarizing your abilities in core areas including IT, numeracy, organization, communication, time management and critical thinking. You can also cover any grades, awards, work placements, extra readings or conferences that you've attended and how these have contributed to your readiness for Masters study.
Your goals – explain your career aspirations and how the course will help you achieve them.