The shoulder area is very complicated. It includes several bones coming together along with a multitude of ligament and muscle connections and moves through a wide range of motion. It is really hard to answer if you don't have a detailed understanding of these structures.
I can decode some of it. The ACJ is the acromioclavicular joint. It is where your clavicle (collar bone) attaches to the scapula (shoulder blade) at the top of your shoulder. Bursas are fluid filled sacks that provide cushioning between moving parts, such as between tendons and bones.
The supraspinatus, infraspinatus, and subscapularis are three of the four muscles known as your rotator cuff. These muscles serve to stabilize and rotate the shoulder (i.e they hold the head of your arm bone in its socket). That you have no tear in any of those muscles is a good thing.
The labrum is the fibrocartilage ring that encircles the head of your arm bone. It partially forms the socket the arm bone sits in. This being normal is also good.
The greater tuberosity (also called the greater tubercle) refers to the upper outside part of your arm bone. Subcondylar cyst is above my paygrade but seems to often be associated with osteoarthritis. Frozen shoulder is the condition where stiffness/pain make it difficult to properly move the shoulder joint.
So what is this telling you? Well, that you have at least moderate damage to several structures of the shoulder. What the MRI isn't going to tell you is why. It could be an overuse issue, injury related, osteoarthritis, etc. or some combination of those things. To determine the why and to prescribe a recuperative program will require a doctor with full knowledge of your medical history and activities, along with, possibly, a variety of other tests/examinations.