Is there any working softbody assets/tutorials

I need softbody for my game, but surprisely I can't find ANYTHING working with new versions. I've tried to use cloth simulation, but it's broken and keep collapsing any mesh except default shapes, I've also tried all free assets (and even tried pirated!) and none of those work.
Is there anything about softbody?
P.S I'm not able to pay 50$+ for assets, because it's pretty expensive in my country and my game is not commertial

 

Beginner tutorial is:

And the second tutorial shows how to use more kinds of joints:

To copy easily, it is the script in the first video:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.U2D;
5.  
6. public class SoftBody2D : MonoBehaviour
7. {
8.     #region Constants
9.     private const float splineOffset = 0.5f;
10.     #endregion
11.    
12.     #region
13.     [SerializeField]
14.     public SpriteShapeController spriteShape;
15.     [SerializeField]
16.     public Transform[] points;
17.     #endregion
18.  
19.     #region MonoBehaviour Callback
20.     private void Awake()
21.     {
22.         UpdateVerticies();
23.     }
24.  
25.     private void Update()
26.     {
27.         UpdateVerticies();
28.     }
29.     #endregion
30.  
31.     #region privateMethods
32.     private void UpdateVerticies()
33.     {
34.         for(int i = 0;i < points.Length;i++)
35.         {
36.             Vector2 _vertex = points[i].localPosition;
37.  
38.             Vector2 _towardsCenter = (Vector2.zero - _vertex).normalized;
39.  
40.             float _colliderRadius = points[i].gameObject.GetComponent<CircleCollider2D>().radius;
41.  
42.             try
43.             {
44.                 spriteShape.spline.SetPosition(i, (_vertex - _towardsCenter * _colliderRadius));
45.             }
46.             catch
47.             {
48.                 Debug.Log("Spline points are too close, recalcuate...");
49.                 spriteShape.spline.SetPosition(i, (_vertex - _towardsCenter * (_colliderRadius + splineOffset)));
50.             }
51.  
52.             Vector2 _lt = spriteShape.spline.GetLeftTangent(i);
53.  
54.             Vector2 _newRt = - (Vector2.Perpendicular(_towardsCenter) * _lt.magnitude);
55.             Vector2 _newLt = - (_newRt);
56.  
57.             spriteShape.spline.SetLeftTangent(i,_newLt);
58.             spriteShape.spline.SetRightTangent(i,_newRt);
59.         }
60.     }
61.     #endregion
62. }
63.