simple rotation question c# local/world

Hi!

I'm trying to make a simple pac-man style game where a character(automatically) moves through a maze. I'm trying to get the player to rotate 90degrees if he hits a wall. I'm using raycasts to check if he is colliding with a wall, but can't get the player to rotate after the first time.

I'm guessing it's got something to do with local vs world rotation, but i don't know how to access it in my code.

 if (Physics.Raycast(transform.position, hitF, 1))
             {
                 Debug.Log("cannot move forward");
                 //...but no wall to the left.
                 if (!Physics.Raycast(transform.position, hitL, 1))
                 {
                     Debug.Log("rotate left");
                     transform.rotation = Quaternion.Euler (0,-90,0);
                 }
                 else //there is a wall left...
                 {
                     //but no wall to the right.
                     if (!Physics.Raycast(transform.position, hitR, 1))
                     {
                         //Debug.Log("rotate right");
                         //rotate right:                        transform.rotation = Quaternion.Euler (0,90,0);
                     }
                     else //there is  wall in front, left and right of him.
                     {
                         //broadcast "gameover"
                     }
                 }
             }
             
             //move player x pixels forward on local axis.
             transform.Translate(Vector3.right * Time.deltaTime, Space.Self);

before the code I've initialised these vars:

     hitF = transform.position;
     hitL = transform.position;
     hitR = transform.position;        
     hitF.x = hitF.x + 1;
     hitL.z = hitL.z + 1;
     hitR.z = hitR.z - 1;

thanks for your time!