how to keep an object moving even it collides some other object

Hey, i want the red ball to move forever in random directions and keep moving even it collides another object. But when it collides an object. it just stuck like that. I increased the bounciness but it didn't work. how can i solve this problem? Here are my scripts below

here is the video: https://imgur.com/FueJAM9

Code (CSharp):

1. Rigidbody2D drb;
2.     public float movespeed;
3.    
4.     private void Awake()
5.     {
6.         drb = gameObject.GetComponent<Rigidbody2D>();
7.     }
8.     void Start()
9.     {
10.         Vector3 rand = new Vector3(0, 0, Random.Range(-180f, 180f));
11.         transform.Rotate(rand);
12.     }
13.  
14.    
15.     void Update()
16.     {
17.        
18.     }
19.     private void FixedUpdate()
20.     {
21.         move();
22.     }
23.     void move()
24.     {
25.         drb.velocity = transform.up * movespeed;
26.     }