So this is the problem that I have :- https://youtu.be/kU8Dm5bDJXg

This is the code i am using:-

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
namespace SA
{
    public class AnimatorHook : MonoBehaviour
    {
        Animator anim;
        StateManager states;
 
        public void Init(StateManager st)
        {
            states = st;
            anim = st.anim;
        }    
 
        void OnAnimatorMove()
        {
            if (!states.canMove)
                anim.ApplyBuiltinRootMotion();
 
            states.rigid.drag = 0;
            float multiplier = 1;
 
            Vector3 delta = anim.deltaPosition;
            delta.y = 0;          
            Vector3 v = (delta * multiplier) / states.delta;
            states.rigid.velocity = v;
        }
 
 
    }
}

For additional reference see the following code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
namespace SA
{
 
    public class StateManager : MonoBehaviour
    {
        [Header("Init")]
        public GameObject activeModel;
 
        [Header("Inputs")]
        public float vertical;
        public float horizontal;
        public float moveAmount;
        public Vector3 moveDir;
        public bool rt, rb, lt, lb;
 
        [Header("Stats")]
        public float moveSpeed = 5f;
        public float runSpeed = 8f;
        public float rotateSpeed = 20;
        public float toGround = 0.5f;
 
        [Header("States")]
        public bool onGround;
        public bool run;
        public bool lockOn;
        public bool inAction;
        public bool canMove;
 
        [Header("Other")]
        public EnemyTarget lockOnTarget;
 
        [HideInInspector]
        public Animator anim;
 
        [HideInInspector]
        public Rigidbody rigid;
        [HideInInspector]
        public AnimatorHook a_hook;
 
        [HideInInspector]
        public float delta;
        [HideInInspector]
        public LayerMask ignoreLayers;
 
        float _actionDelay;
 
        public void Init()
        {
            SetupAnimator();
            rigid = GetComponent<Rigidbody>();
            rigid.angularDrag = 999;
            rigid.drag = 4;
            rigid.constraints = RigidbodyConstraints.FreezeRotationX | RigidbodyConstraints.FreezeRotationZ;
 
            a_hook = activeModel.AddComponent<AnimatorHook>();
            a_hook.Init(this);
 
            gameObject.layer = 8;
            ignoreLayers = ~(1 << 9);
 
            anim.SetBool("onGround",true);
        }
 
        void SetupAnimator()
        {          
            if(activeModel == null)
            {
                anim = GetComponentInChildren<Animator>();
                if(anim == null)
                {
                    Debug.Log("no model found");
                }
                else
                {
                    activeModel = anim.gameObject;
                }
            }
            if(anim == null)
            {
                anim = activeModel.GetComponent<Animator>();
            }
            //anim.applyRootMotion = false;
        }
 
        public void FixedTick(float d)
        {
            delta = d;
            rigid.drag = (moveAmount > 0 || !onGround) ? 0 : 4;
 
            DetectAction();
 
            if (inAction)
            {
                // anim.applyRootMotion = true;
 
                _actionDelay += delta;
                if(_actionDelay > 0.3f)
                {
                    inAction = false;
                    _actionDelay = 0;
                }
                else
                {
                    return;
                }
            }
 
            canMove = anim.GetBool("canMove");
 
            if (!canMove)
            {
                return;
            }
            //anim.applyRootMotion = false;
         
 
            float targetSpeed = moveSpeed;
 
            if (run)
                targetSpeed = runSpeed;          
         
 
            if(onGround)
                rigid.velocity = moveDir * (targetSpeed * moveAmount);
 
           /* if (run)
                lockOn = false;
                */
 
            Vector3 targetDir = (lockOn == false) ? moveDir : lockOnTarget.transform.position - transform.position;
            targetDir.y = 0;
            if (targetDir == Vector3.zero)
                targetDir = transform.forward;
            Quaternion tr = Quaternion.LookRotation(targetDir);
            Quaternion targetRotation = Quaternion.Slerp(transform.rotation, tr, delta * moveAmount * rotateSpeed);
            transform.rotation = targetRotation;
 
            anim.SetBool("lockon", lockOn);
 
            if (lockOn == false)
                HandleMovementAnimations();
            else
                HandleLockOnAnimations(moveDir);
        }
 
        public void DetectAction()
        {
            if (canMove == false)
                return;
 
            if (rb == false && rt == false && lt == false && lb == false)
                return;
 
            string targetAnim = null;
 
            if (rb)
                targetAnim = "Sword And Shield Attack";
            if (rt)
                targetAnim = "Stable Sword Outward Slash";
            if (lb)
                targetAnim = "Standing Melee Attack Horizontal";
            if (lt)
                targetAnim = "Sword And Shield Slash (1)";
 
            if (string.IsNullOrEmpty(targetAnim))
                return;
 
            canMove = false;
            inAction = true;
            anim.CrossFade(targetAnim,0.2f);
            //rigid.velocity = Vector3.zero;
        }
 
        public void Tick(float d)
        {
            delta = d;
            onGround = OnGround();
 
            anim.SetBool("onGround", onGround);
        }
 
        void HandleMovementAnimations()
        {
            anim.SetBool("run", run);
            anim.SetFloat("Vertical", moveAmount ,0.4f,delta);
        }
 
        void HandleLockOnAnimations(Vector3 moveDir)
        {
            Vector3 relativeDir = transform.InverseTransformDirection(moveDir);
            float h = relativeDir.x;
            float v = relativeDir.z;
 
            anim.SetFloat("Vertical", v, 0.2f, delta);
            anim.SetFloat("Horizontal", h, 0.2f, delta);
 
 
        }
 
        public bool OnGround()
        {
            bool r = false;
            Vector3 origin = transform.position + (Vector3.up * toGround);
            Vector3 dir = -Vector3.up;
            float dis = toGround + 0.3f;
            RaycastHit hit;
            if(Physics.Raycast(origin,dir,out hit,dis))
            {
                r = true;
                Vector3 targetPosition = hit.point;
                transform.position = targetPosition;
            }
            return r;
        }
    }
}

I've been stuck on this for too long, any help will be highly appreciated

Be Sure that any of the object child have this collider 

and make x,y,z = 0 in the middle of the object 

17 minutes ago, Mostafa Yahia said:

Be Sure that any of the object child have this collider 

and make x,y,z = 0 in the middle of the object 

I have ensured everything you mentioned above and it still does not work

ok create another gameobject and test animation with it with the same script and check if the problem still exist 

11 hours ago, Mostafa Yahia said:

ok create another gameobject and test animation with it with the same script and check if the problem still exist 

Thanks for your replies, but it is still not working

What role does 'canMove' have in this? if you set canMove false in your controller so it early outs on FixedTick what is preventing the animation of the ybot child object from continuing and moving it away from its parent?