2) The action of bench press must be standard. If you are not careful, all the weight that should be borne by the upper body will fall on your shoulders.
3) For a period of time, it is best not to do bench press training, but to do more shoulder training and focus on strengthening muscle density. That is to say, the small weight is carried out many times, and the number of groups increases from less to more.
Generally, it can be recovered after a period of time. This training method is actually the rehabilitation training method used by doctors. If you still haven't recovered, try other rehabilitation training.