It's a big problem. Trapezius muscles vary in size, and it is easy to correct unilateral dumbbell shrug. But from the picture, the scapula abduction is serious and the shoulder joint descends. Teres major and teres minor obviously lack strength, which leads to the excessive strength of the serratus muscle (the scapula is tightly bound to abduction, which is a very abnormal state among African refugees, and the most famous example is Bruce Lee). It's not a simple muscle problem, but now it has caused thoracic deformation (your left shoulder is at least 2cm wider than your right shoulder, and if you look closely, your ribs are torn).

The doctor doesn't know if he saw it, but the training method does exist. But if you lose a plan, blind training will only aggravate the problem (stronger and weaker). Don't be afraid to spend money to go to a professional fitness center to find a professional plastic surgeon to help you plan and adjust.