It's hard enough to just learn bjj but I find the lack of take down or stand up grappling is kind of frustrating. For example. I spar against a pure wrestler. He was able to control me with clinches and take me down easily. The only thing I can do is pull guard but he would explode up . I realize my wrestling or any stand up grappling sucks. But most bjj gym when they spar it's on the ground. I find this frustrating. Why not focus more on take downs?