No. Attempting to reduce (relocate) your own dislocated shoulder is strongly discouraged and generally impossible to do safely.
The shoulder (glenohumeral joint) is a complex ball-and-socket mechanism stabilized by muscles, tendons, ligaments, and the labrum. A dislocation often involves:
Self-manipulation risks converting a simple dislocation into a complex fracture-dislocation or causing permanent nerve damage. Muscle spasms make self-reduction mechanically unfeasible without sedation.
Correct Action: Immobilize the arm (sling or splint), apply ice, and seek emergency medical care immediately. A clinician will obtain imaging, provide analgesia/sedation, perform a controlled reduction (e.g., Stimson, Hippocratic, or Milch technique), and arrange follow-up for rehab.