shoulder injury

hello, i had a minor injury at the gym, but i didn't rest well and it became a cut in the tendon shown in the ultra sound (4mm) after 2 months of rest and anti inflamatory treatment, the pain didn't stop i had an MRI it said i have ( longitunal cleavage of the suprapenitis tendon) and i had another month of treatment and rest and started physical therapy, the first session gave me a lot of pain that i didn't have before, and now my range of movement has dropped and every movement hurt, i suspected a partially torn muscle because the pain was not in the tendon it was in the deltoid muscle at the edge of the triceps.
what