Flying, and especially tricking, is all about having the right sail pressure
Gusty and turbulent wind means you're having to adjust the sail pressure all the time by giving or pulling on the lines together.
Example, to do a really good snap stall, the kite must be powered up first... Do a dive at 5mph with good pressure, then just as you give the inputs for the stall, the wind dies, there isn't enough pressure to "bang" the stall, so it either goes limp or overreacts and flips on it's back... Same thing if you're in a fade, or other slack line trick, your input can either be overpowered or underpowered just by the sudden change in wind... As you gain more skill, these wind variables can generally be compensated for, but it takes some time and a lot of practice to develop that feel until you make those adjustments automatically.
For now, I'd suggest practicing your sail loading and basic controls... Fly circles, squares and other shapes throughout the whole wind window, moving forward or back (body or hands) to sustain an equal amount of pressure, keeping drive in the sail, controlling the speed, etc.