When the first (and following) shoulder dislocation required no (or little) trauma and if you are able to dislocate your shoulder yourself, then the term broadly used is 'Atraumatic shoulder instability'.
This excludes shoulder dislocations following an injury (e.g. rugby player), which is known as 'Traumatic Instability'.
Atraumatic shoulder instability is generally treated with rehabilitation in the first instance.
Surgery is only very rarely required.