My 2D ball keep falling through ground


I am doing Color Switch clone
I have a sprite object (with a hand picture attach to it).
The sprite has BoxCollider2D.

I tried everything already but for an unknown reason the ball keeps falling, the ball object has a Rigidbody2D and Circle Collider 2D (is Trigger Check).

From youtube video, I saw that all I have to do is make sure the ball is a trigger = true and the ground has BoxCollider2D but it does not work.

Here is the link for the project:

If the ball’s Circle Collider 2D has Is Trigger checked like you say it does, that means that the ball will no longer physically collide with the ground because triggers no longer collide, they simply activate when they overlap with another object. Try setting Is Trigger to false (unchecking it).