We’ve been told that, if an applicant is not applying as a recruited athlete, then the athletic ECs become like any other EC – the source for essays etc. So yes, I would use the “ingredients” you have for your apps, which is the leadership and experience from your sport. One word of caution – try to avoid the cliche essay about the injury/loss which made you appreciate something new about yourself, your sport, your team etc.
Hang in there!