Preventing player from sticking to the wall while jumping?

I'm working on a 2d platformer game for a school project. I know little about coding, here's all I have so far.

 [SerializeField] private float speed;
 private Rigidbody2D body;
 private Animator anim;
 private bool grounded;

 private void Awake()
 {
     body = GetComponent<Rigidbody2D>();
     anim = GetComponent<Animator>();
 }

 private void Update()
 {
     float horizontalInput = Input.GetAxis("Horizontal");
     body.velocity = new Vector2(horizontalInput * speed, body.velocity.y);

     if (horizontalInput > 0.01f)
         transform.localScale = Vector3.one;
     else if (horizontalInput < -0.01f)
         transform.localScale = new Vector3(-1, 1, 1);

     if (Input.GetKey(KeyCode.Space) && grounded)
         Jump();

     anim.SetBool("Running", horizontalInput != 0);
     anim.SetBool("grounded", grounded);
 }

 private void Jump()
 {
     body.velocity = new Vector2(body.velocity.x, speed + 5);
     grounded = false;
 }

 private void OnCollisionEnter2D(Collision2D collision)
 {
     if (collision.gameObject.tag == "Ground")
         grounded = true;
 }        

The player can stick to a wall while jumping if you move into it. I want to fix that so the player always falls down. Does anyone know how to do that?