Rigidbody FPS controller getting stuck on walls.

I'm trying to make a Wolfenstein3D style movement controller, it works fine until I rub against a wall, this for some reason brings the player to a grinding halt

 public class playerMovement : MonoBehaviour
 {
     private float Starthealth = 100f;
     public float health;
     public float moveSpeed = 3.0f;
     public float rotationSpeed = 5.0f;

     void FixedUpdate()
     {
         float rotateTank = Input.GetAxis("Horizontal") * rotationSpeed * Time.deltaTime;
         float moveTank = Input.GetAxis("Vertical");
         GetComponent<Rigidbody>().velocity = transform.forward * moveSpeed * moveTank;
         GetComponent<Rigidbody>().freezeRotation = true;
         transform.Rotate(0, Input.GetAxis("Horizontal") * rotationSpeed * Time.deltaTime, 0);
     }
     
 }