This might help with understanding. Both of my children dislike team sports. When I asked why, DS8 told me, "it was because of the pressure of not letting the team down" if he made a mistake. They are both protectionist and are harder on themselves than the team would be.

We have found they both like skiing, skateboarding, rock climbing, and hiking, basically anything that doesn't involve a team or other kids counting on them.

Good luck! If you find a solution, I would love to hear it.