could you explain more on how i can use drivers ? also is there a better way to fix the problem instead of adjusting the shoulder bone every key frame ?
There are plenty of tutorials on youtube explaining drivers better than i ever could. Basically you apply a driver on the rotation channel that determine the height of the shoulder based on the rotation of the upper arm. It’s not that hard. Personally a dont like auto clavicle rigs and prefer to animate the shoulder manually for better control.