As for teres major, teres minor, supraspinatus, infraspinatus and so on, pull-ups will have a good effect. Or you can teach yourself boxing training at home. Because most professional athletes have back muscles involved in boxing, the back muscles are quite developed. You can put a training ball at home when you touch your fist, which is cheaper. You can check it online yourself.
Boxing training can not only increase the back muscle mass, but also have a very good whole body exercise effect. The muscles in the back belong to a large muscle group, so you should train every 72 hours to get enough rest for the muscles in the back.
Update 1: I've had it before.
Can't lose weight.
But I will become colorful. Every time I feel cramps in my stomach, I will sweat when I