2D Animation plays for a split second unless i spam the input button,2D Animation plays for a split second unless i spam the input button

when i try to perform Melee attack it only plays animation for a slip second, if i keep spamming the Fire2(Melee attack input) button it sometimes work and plays the complete random attack animation but other times the player will twitch for a split second and goes back to idle

 //CHARACTER CONTROLLER
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;

 public class PlayerController : MonoBehaviour
 {
 //PLAYER AND ANIMATION
 public Rigidbody2D rb;
 public Animator animate;
 public SpriteRenderer sp;
 public float speed = 0f;
 public float jumpforce = 0f;
 
 //JOYSTICK
 public Joystick joystick;
   

 //GroundCheck
 bool isgrounded;
 public Transform groundcheck;
 //slide
 bool running = true;
 bool canslide = false;
 public float waitfor = .6f;
 //TO ROTATE INSTED OF FLIPPING
 bool facingright = true;
 bool flipp;
 // TO STORE SHOOTING BOOL VALUE FROM ANOTHER SCRIPT 
 public bool shooting;
 public bool attacking;

 void Update()
 {
     // CHECKING IS PLAYER IS SHOOTING FROM PLAYCOMBAT SCRIPT
     //SAVING VALUE INSIDE SHOOTING

     PlayerCombat pc = gameObject.GetComponent<PlayerCombat>();
     shooting = pc.Shooting;


     //SAVING VALUE INSIDE ATTACKING
     attacking = pc.attacking;
     
 }

 // Update is called once per frame
 void FixedUpdate()
 {
     if (Physics2D.Linecast(transform.position, groundcheck.position, 1 << LayerMask.NameToLayer("ground")))
     {
         isgrounded = true;

     }

     else
     {
         isgrounded = false;

     }
     if (joystick.Horizontal >= .2f && !shooting && !attacking) //HORIZONTAL RIGHT
     {
         //TO TELL THE PLAYER TO FLIP LEFT
         flipp = true;
         
         rb.velocity = new Vector2(speed, rb.velocity.y);
         
         if (isgrounded && running == true )
             animate.Play("player_run");
         canslide = true;
         //REVERT IF ROTATE DIDN'T WORK:sp.flipX = false;

     }
     else if (joystick.Horizontal <= -.2f && !shooting && !attacking) //HORIZONTAL LEFT
     {
         flipp = false;
         
         
         rb.velocity = new Vector2(-speed, rb.velocity.y);
         
         if (isgrounded && running == true )
             animate.Play("player_run");
         canslide = true;
         //REVERT IF ROTATE DIDN'T WORK:sp.flipX = true;
         
         
     }
     else
     {
         if (isgrounded && !shooting && !attacking)  //IDLE
             animate.Play("idle");
         canslide = false;
         waitfor = .6f;

         rb.velocity = new Vector2(0, rb.velocity.y);
     }
      //TO TRIGGER THE RIGHT FLIP
     if (flipp && !facingright)
     {
         flip();
     }
     //TO TRIGGER THE LEFT FLIP
     else if (!flipp && facingright)
     {
         flip();
     }

     if (joystick.Vertical >= .6f && isgrounded == true)  //JUMP
     {
         rb.velocity = new Vector2(rb.velocity.x, jumpforce);
         animate.Play("jump");
     }
     if (joystick.Vertical <= -.6f && isgrounded == true && canslide == true && waitfor > 0) //SLIDE
     {
         waitfor -= Time.deltaTime;
         running = false;
         Time.timeScale = .8f;
         animate.Play("player_slide");
         
      }
     else
     {
         running = true;
         Time.timeScale = 1f;
         canslide = false;
         
     }
    
 }

 //TO ROTATE NO FLIP
 private void flip()
 {
     facingright = !facingright;
     transform.Rotate(0f, 180f, 0f);
 }
 }

   

//PLAYER COMBAT SCRIPT

  using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerCombat : MonoBehaviour
 {
     Animator animator;
     public bool Shooting = false;
     //TO GET BULLET AND ITS FIREPOINT
     public GameObject BulletPrefab;
     public Transform FirePoint;
     public float waitfor = 0f;
     //FOR MELEE ATTACK
     public bool attacking = false;
     
     // Start is called before the first frame update
     void Start()
     {
         animator = GetComponent<Animator>();
     }
 
     // Update is called once per frame
     void Update()
     {
         if (Input.GetButton("Jump") && waitfor >= 0f && waitfor < .7f)
         {
             waitfor += Time.deltaTime;
             animator.Play("player_shoot");
             Shooting = true; ;
         }
         else if (Input.GetButtonUp("Jump") && waitfor > .2f)
         {
             shoot();
             Shooting = false;
         }
         else
         {
             waitfor = 0f;
                 Shooting = false;
         }
 
         if (Input.GetButtonDown("Fire2") && !Shooting && !attacking) 
         {
             
             attacking = true;
             //choose random attack animation
             int index = UnityEngine.Random.Range(1,4);
             animator.Play("player_attack" + index);
 
             StartCoroutine(attack());
             
             
         }
         
        
         
     }
     void shoot()
     {
 
         Instantiate(BulletPrefab,FirePoint.position,FirePoint.rotation);
     }
 
     IEnumerator attack()
     {
         yield return new WaitForSeconds(.8f);
         attacking = false;
     }
 
     
 }