Single .dcm data loading and 3D model

Operating system: Windows 10
Slicer version: 4.10.1
Expected behavior: Create an accurate 3D model from a serie of single .dcm files from MRI
Actual behavior: can’t load the files in the DCM folder (displays 0 patients added), if I load the .dcm files from the “data folder” it shows each single slice and can’t create an accurate 3D model of the patient.

I’m reading all the chats about this topic and followin tutorials but can’t fix it. I was able to make a proper work using the “sample files” from Slicer but can’t do it anymore with my own dcm images.
Could you help me? Thank you so much!