In which control scheme? If you were using the motion controls, you might have pressed ZL and ZR by mistake (the L and R buttons are kind of small). If you were using the traditional controls, your rush gauge probably wasn't full yet. If you were using the single joy-con controls, the L, ZL, R, and ZR buttons are not mapped to anything; you might be confusing them with SL and SR, which activate rush, and as I said before, it might be due to your rush gauge not being full yet. Hope this helps!