Full stop. Your activities are not lacking.
I definitely got the feeling that my Fairfax students were obsessing about ECs during my school visits this year. I don’t know who up there is dialing things up in this area, but let me point you to the blog post that was inspired by the conversations I had with students this fall:
http://uvaapplication.blogspot.com/2018/10/do-activities-need-to-align-with.html
Here are some other blog posts that you might find interesting:
http://uvaapplication.blogspot.com/2017/10/does-uva-look-for-consistency-in.html
http://uvaapplication.blogspot.com/2018/07/which-activities-are-most-valued-by-uva.html