The said symptoms are similar to neck arthritis. Of course, continue the treatment with the doctor's opinion, but the following exercises can also be useful for you.
Stretching the neck to the sides, front and back. Run with pauses and 15 seconds each. Do not hold your breath while stretching.
Raising and lowering the shoulder with a very lightweight like half a kg.
We have included pictures of some important exercises below. Of course, try to check the exercises again under the supervision of a doctor to make sure that you are performing them correctly.