Add a wall jump mechanic to the 2D Character prefab?

Hey there,

as the title says, i want to add a wall jump mechanic to the 2d character prefab which comes from Unity. I really suck at coding :-/

here’s the code:

using UnityEngine;

public class PlatformerCharacter2D : MonoBehaviour 
	bool facingRight = true;							// For determining which way the player is currently facing.

	[SerializeField] float maxSpeed = 10f;				// The fastest the player can travel in the x axis.
	[SerializeField] float jumpForce = 400f;			// Amount of force added when the player jumps.	

	[Range(0, 1)]
	[SerializeField] float crouchSpeed = .36f;			// Amount of maxSpeed applied to crouching movement. 1 = 100%
	[SerializeField] bool airControl = false;			// Whether or not a player can steer while jumping;
	[SerializeField] LayerMask whatIsGround;			// A mask determining what is ground to the character
	Transform groundCheck;								// A position marking where to check if the player is grounded.
	float groundedRadius = .2f;							// Radius of the overlap circle to determine if grounded
	bool grounded = false;								// Whether or not the player is grounded.
	Transform ceilingCheck;								// A position marking where to check for ceilings
	float ceilingRadius = .01f;							// Radius of the overlap circle to determine if the player can stand up
	Animator anim;										// Reference to the player's animator component.

    void Awake()
		// Setting up references.
		groundCheck = transform.Find("GroundCheck");
		ceilingCheck = transform.Find("CeilingCheck");
		anim = GetComponent<Animator>();

	void FixedUpdate()
		// The player is grounded if a circlecast to the groundcheck position hits anything designated as ground
		grounded = Physics2D.OverlapCircle(groundCheck.position, groundedRadius, whatIsGround);
		anim.SetBool("Ground", grounded);

		// Set the vertical animation
		anim.SetFloat("vSpeed", rigidbody2D.velocity.y);

	public void Move(float move, bool crouch, bool jump)

		// If crouching, check to see if the character can stand up
		if(!crouch && anim.GetBool("Crouch"))
			// If the character has a ceiling preventing them from standing up, keep them crouching
			if( Physics2D.OverlapCircle(ceilingCheck.position, ceilingRadius, whatIsGround))
				crouch = true;

		// Set whether or not the character is crouching in the animator
		anim.SetBool("Crouch", crouch);

		//only control the player if grounded or airControl is turned on
		if(grounded || airControl)
			// Reduce the speed if crouching by the crouchSpeed multiplier
			move = (crouch ? move * crouchSpeed : move);

			// The Speed animator parameter is set to the absolute value of the horizontal input.
			anim.SetFloat("Speed", Mathf.Abs(move));

			// Move the character
			rigidbody2D.velocity = new Vector2(move * maxSpeed, rigidbody2D.velocity.y);
			// If the input is moving the player right and the player is facing left...
			if(move > 0 && !facingRight)
				// ... flip the player.
			// Otherwise if the input is moving the player left and the player is facing right...
			else if(move < 0 && facingRight)
				// ... flip the player.

        // If the player should jump...
        if (grounded && jump) {
            // Add a vertical force to the player.
            anim.SetBool("Ground", false);
            rigidbody2D.AddForce(new Vector2(0f, jumpForce));

	void Flip ()
		// Switch the way the player is labelled as facing.
		facingRight = !facingRight;
		// Multiply the player's x local scale by -1.
		Vector3 theScale = transform.localScale;
		theScale.x *= -1;
		transform.localScale = theScale;

Thanks for your help,