Issue with direction and rigibody2D

Hello,

I have an issue when I'm trying to send a projectile from a position to an unkown position but driven by a direction. Imagine a bubble game, I want the same behaviour as a bubble you send by clicking on the screen.

So I have a projectile, wall which change direction of this projectile and some block objects where the projectile will collide with and stop moving. This projectile has a Rigidbody2D on and is non-kinematic, that's why I'm using velocity to launch it. The projectile go where I want it to go (toward click direction) but it stops at click position (x and y aixs). I want it to continue until it touches a block object. So the direction is alright (target = click), but I don't know how to tell the projectile to keep going.

There is a piece of code I write to get this result :

 // way = 1 or -1 if the object bounce on a wall it inverse direction in x axis)
 
 //Target = mouse position (direction I want the projectile to follow
 target = new Vector2((way * _mousePosX), _mousePosY);
 
 direction = (target - (Vector2)_itemToThrow.transform.position).normalized;
 
 //I tested with moveposition and lookat same result as velocity 
 //_itemToThrow.GetComponent<Rigidbody2D>().MovePosition((Vector2)_itemToThrow.transform.position + direction* 10 * Time.deltaTime);
 
 /*_itemToThrow.transform.LookAt(target);
 _itemToThrow.GetComponent<Rigidbody2D>().velocity = _itemToThrow.transform.forward * 500;
 _itemToThrow.transform.rotation = new Quaternion(0, 0, 0, 0);*/
 
 
 // This is the actual code, work the same with transform direction or without
 _itemToThrow.GetComponent<Rigidbody2D>().velocity = direction * 100 * Time.deltaTime; // transform.TransformDirection(direction* 50 * Time.deltaTime); 
 

Well if you have any idea how I can send my projectile to a define direction but an "infinite" position at the end it will be appreciated.

Thank you for your help and time !