I am a senior in high school from India.
It is great that you are a national level swimmer and in India!
Here is a link on youtube I recommend you watch to see whether it is a good or bad idea to write your college essay on swimming.
https://www.youtube.com/watch?v=DcHKHAe76j4
Good Luck, and You Got This!
To keep this community safe and supportive:
What specifically would you write about in relation to swimming?