Your statement of purpose is unique to you. It is a one-page essay that explains to the university who you are, why you're applying, why you're the right candidate, and what you want to do with the degree in the future. It is your only opportunity to convince the admission committee that you have what it takes to be successful in your graduate studies! There are key elements that you need to include in the essay that will make your application stand apart!
Your statement of purpose needs to demonstrate and emphasize that as a student candidate that you are competent, self-motivated, and are persistent! This means not just writing statements but showcasing through your writing, your learnings inside and outside the classroom! You need to emphasize the positives in an active tone rather than a passive one! You can show your perseverance by writing about how you overcame obstacles and your experiences that have driven you to go more in-depth into the subject of your choice!
A good statement of purpose talks about your strengths and how you believe that the course you are applying to will help you in the future! Do your homework and research on modules that you will benefit from. There might be some you already know and some that have driven you to the course your applying! University too! Each institution has its own motto, vision, culture, and methodologies. Your statement of purpose should mention what about the university appeals to you! If the admission team can see you identify with their student community, the higher your chances of being shortlisted!