How do y'all deal with turbulence in small planes?

I was doing some first-flight missions in the starting plane, and it seriously felt like I was getting tossed around like a leaf in a hurricane. I couldn't keep the aircraft from trying to roll and yaw one way or the other.

Is that turbulence or something else? Is there something I can do to make it more manageable? I was able to A-rate the missions, but my butthole was puckered the entire time.