>>1004626
here's a fantastic rig by one of the best blender riggers out there. he uses 1 bone for the shoulder (circled in blue) then a corrective bone (the floating bone circled in blue) to fix weird deformation with the traps. there are other corrective bones here meant to simulate the movement of other muscles but the principle is the same. probably a lot more than you need to concern yourself with but you get the point. im sure a video could explain it better than i can