As you can see in photo how can i create loop cuts in all direction, when i merge vertexs by distance and when i want to add a loop cut in all direction this happens.
How can i fix this
There must be connected edges to work the edge loop to add loop to other edge rings. The first image I can’t see well what’s going on but there must be a duplicated vertex intersecting in that area.
Check for flipped faces in the top example.