MotorTorque reversing not Working

When I make the "reverCounter < 2" its start reversing from the beginning but when I make "reverCounter > 2" and then when my car stuck in something it should reversing but it won't. What I did wrong with this code. Please help me.

     if (Rb.velocity.magnitude < 2 && !reversing) {
         reverCounter += Time.deltaTime;
         if (reverCounter > 2) {
             wheelRL.motorTorque = -maxTorque;  
             wheelRR.motorTorque = -maxTorque;
             reverCounter = 0; 
             reversing = true;
         }

     } else if (!reversing) {
         reverCounter = 0;
     }


     if (reversing){  
         avoidSenstivity = -1;  
         reverCounter += Time.deltaTime;  
         if (reverCounter >= 2){  
             reverCounter = 0;  
             reversing = false;
         }  

     }