Char animation breaks when trying to manipulate one arm with Obi Rope in Unity(mobile game) - unity3d

Question

I am trying to keep my character always idle-animated, even when User stretches his arm by pulling it with touchscreen. The character's arms are purely fists and body, with an obi rope in-between. Body animation works with obi-rope until any hand is being stretched,then the hand part of animation breaks, and it keeps moving but the hand is static. Same applies to another hand and legs :(
I don't know how to even describe it in 1 sentence, so googling didn't help me much. Please, help me out. I don't want to turn off animation when my character stretches arms, it look super artificial
If the code would be of any use:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class PlayerHit : MonoBehaviour
{
[SerializeField] private Image circleThisBodyPart;
private Vector3 startScale;
private Vector3 firstPosition;
private Vector3 lastPosition;
private Quaternion startRotation;
private bool isHit = false;
private bool isFirstAttack = true;
private int stage = 0;
private Vector3 posAfterMouseUp;
private void Start()
{
startRotation = transform.rotation;
startScale = transform.localScale;
firstPosition = transform.position;
}
private void LateUpdate()
{
if (isHit)
{
this.transform.rotation = startRotation;
this.transform.localScale = startScale;
if (stage == 1)
{
this.gameObject.transform.position = Vector3.MoveTowards(transform.position, new Vector3(lastPosition.x, lastPosition.y, lastPosition.z), 20f * Time.deltaTime);
if (this.transform.position == lastPosition)
{
stage = 2;
}
}
if (stage == 2)
{
this.gameObject.transform.position = Vector3.MoveTowards(transform.position, firstPosition, 20f * Time.deltaTime);
transform.localScale = startScale;
if (this.transform.position == firstPosition)
{
PlayerAttackBody.isAttack = false;
GlobalEvents.ShowPlayerCircles?.Invoke();
stage = 0;
}
}
}
}
private void OnMouseDown()
{
if (isFirstAttack)
{
GlobalEvents.StartGame?.Invoke();
isFirstAttack = false;
}
PlayerAttackBody.isAttack = true;
GlobalEvents.HidePlayerCircles?.Invoke(circleThisBodyPart);
GlobalEvents.ChangePosToCameraDistance?.Invoke(this.gameObject);
}
private void OnMouseDrag()
{
this.transform.localScale = startScale;
this.transform.rotation = startRotation;
}
private void OnMouseUp()
{
posAfterMouseUp = transform.position;
GlobalEvents.ChangePosToCameraDistance?.Invoke(null);
Vector3 currentPos = this.transform.position;
lastPosition = new Vector3(-currentPos.x, -currentPos.y+2.9f, -currentPos.z);
isHit = true;
stage = 1;
}
}