Unity 2D Bubble Shooter Game

I am looking for a skilled Unity developer to help me complete the development of my Android bubble shooter game. I would like to modify a Bubble Shooter game, the basic framework of which is already developed (source code available). I need to modify it so that the bubbles are contained within a rectangle. (the balls arranged above should be placed within a rectangle, a rectangular box with an open bottom that moves left, right, up, and down. The bubbles are inside the rectangle, and when the rectangle moves, the bubbles inside move with it.)Additionally, it should support infinite levels. The development is to be done using Unity 2022.3.10f1. In the game, the box remains stationary for the first three levels. After the third level, the box begins to move randomly, initially moving side to side. After the tenth level, it can move up and down and diagonally. The movement of the box starts off very slow, but as the levels increase, the speed begins to increase. Once the movement speed reaches a certain threshold, it no longer accelerates. Additionally, the size of the box can change. The direction of the box's movement does not change frequently. For instance, if it moves left, the box will continue to move left until it touches the screen boundary before changing direction. If moving downward, it will hit an invisible line and then change direction. If it were to continue moving downward until reaching the bottom of the screen before changing direction, it would be impossible for the player to hit the ball. Additionally, for levels after level 10, each new level will add an extra layer of balls at the top. After the balls at the bottom are cleared, new balls are added to the very top. The project's budget is no more than 150 dollars.