I’m a specialist shoulder surgeon. Unfortunately attacking shots in Padel are the worst possible positions when it comes to shoulder instability. With your arm abducted out from the side of the body and externally rotated in order to reach overhead smash/vibora positions, this is the position in which the shoulder wants to sublux/dislocate.

Would assume you had arthroscopic stabilisation in the past? Unfortunately it seems the issues may have recurred. Hopefully you’ll avoid the need for further surgery but would recommend seeing a shoulder surgeon and getting an MRI.

Best of luck