2 Chronic Pains, all attempted solutions have failed.

[nmarman]

Assuming the x rays and MRI were read correctly then it is unlikerly that much else could be wrong except for tendonitis and bursitis.
The hard bit comes in finding exactly which area/tendon is the primary pain generator.

The most common is the supraspinatus tendon. This would give pain if you press deep at the side of shoulder, just under the bony roof. This will hurt most when rising a straight arm out to the side against resistance from about 15-45 degrees. After which pain might decease before starting again when arm archs closer to ear.

After a while this with produce trigger points in the muscle belly (top of shoulder blade). These trigger points can produce pain in the belly and even radiate to the elbow.

Pain at the front of the shoulder will be secondary impingement & bursitis as the deltoid lifts the ball of the upper arm high into the socket making the roof space very narrow (impingement) this impinges the bursa causing it to swell. This area will hurt more if elbows are behind body (back pack while holding straps)

Note: people with impingement often find it hard to remove A wallet frOm back pocket.

Try seeing how your symptoms fit into that