Having trouble steering gameobject.

Hi there. So I am making a 2d maze game where one of the enemies has to follow the player once it detects the player. I am currently using a steering method to steer the enemy towards the player and also when it detects a wall. I am not using any sort of path finding algorithm, just using steering to make a "dynamic" path finder. But I am having some trouble steering the enemy away from the walls and then resume moving towards the player.

This is what I am doing right now:

1. follow the player when it is detected

2. set the enemy's velocity towards the player.

3. use a raycast to detect if a wall is ahead

4. if raycast detects the wall, steer the enemy towards the direction it is moving in, then steer it towards the position of the player again. E.g if it is moving up while following the player and hits a wall on the left or right, it will steer up.

I am having a hard time steering the enemy away from the wall and then back towards the player again, because once it steers away from the wall and isn't hitting a wall anymore, it checks where the player is to resume it's pursuit, but then the player goes too far away from the enemy and so it doesn't know where to move towards.

Here is the code:

 void Update()
  {
     RaycastHit2D hit2D = Physics2D.Linecast(transform.position, player.transform.position, 1 << 8);
     if (hit2D)
     {
         string wallTag = hit2D.collider.tag;
         FindMovementDirection(ref wallTag);
         wallHit = true;
     }
     else
     {
         wallHit = false;
     }
  }

 void FindMovementDirection(ref string wallTag)
 {
     int len = 3;
     if (wallTag == "V_Wall")
     {
         if (currentVel.y <= 0) currentDirection.localPosition = new Vector3(0, -len, 0);
         else currentDirection.localPosition = new Vector3(0, len, 0);
     }
     else if (wallTag == "H_Wall")
     {
         if (currentVel.x <= 0) currentDirection.localPosition = new Vector3(-len, 0, 0);
         else currentDirection.localPosition = new Vector3(len, 0, 0);
     }
 }

 void seekSteer()
  {
     float maxForce = 0.8f;
     float maxSpeed = 6;

     if (wallHit)
     {
         desiredVel = currentDirection.position - transform.position;
     }
     else
     {
         desiredVel = player.transform.position - transform.position;
     }
     desiredVel.Normalize();
     desiredVel *= maxSpeed;

     steerVel = desiredVel - currentVel;
     if (steerVel.magnitude > maxForce)
     {
         steerVel.Normalize();
         steerVel *= maxForce;
     }
     currentVel += steerVel;
     if (currentVel.magnitude > maxSpeed)
     {
         currentVel.Normalize();
         currentVel *= maxSpeed;
     }
 }

 void FixedUpdate()
 {
     transform.position += currentVel * Time.fixedDeltaTime;
 }

Another thing that I would like to ask is that, should I be using a path finding algorithm?I am aware that I am not using one and that is because I want the enemy to find it's path dynamically. I also know that path finding and steering go hand in hand most of the time, so am I doing it wrong? Thanks.