Oh, many guys don’t understand the toresn differentials in the raptor. If you do- great. If not, learn about BTM Brake Throttle Manipulation.
Basically when you loose traction at low speed off road:
Apply brake till all wheels stop with no throttle. Hold brakes on. Bring up rpm into the torque band and ease off brakes part way. The torson will apply all
Torque to the wheel with traction and the free spinning wheel will be held by the brakes.
Takes a little practice, wet grass is really easy to learn.