Difficulty in daily life due to shoulder and neck pain

My neck to shoulders hurt all the way down like in the picture.

I went to the local orthopedic clinic and was told that my back problems are connected to my overall health.

I heard thatㅠ

So, I need to receive chiropractic treatment and physical therapy.

But I'm worried because the cause doesn't seem very clear.

Should I go to a larger hospital to get an MRI?

Is there anyone who has received treatment for pain in that area like me?

I'm wondering if exercising besides treatment can also help alleviate pain.