Help! Sort layer dont working perfect :-(

Move the hotspot of your object to the bottom. Or where the "ground" is

The layer object will sort ascending or descending Y positions. You need to set up your hotspots so that when the player hotspot is above or below another object's hotspot in Y it will sort properly. This is what makes isometric engines so tricky.

You also need to make sure your collision doesn't allow the player to walk in places that look strange. I have done a modification to your file and you can see that your choice of angle is not ideal. You would need to make the collision stop the player from walking behind the front left corner. Another option is to split the objects into left and right halves. But no matter what you do, you need to make the height of your player shorter that the walls they can walk in front of.