Sorry for misspelling. English isn’t my first language. I do however read and understand perfectly:)
There are many benign reasons all these things could be happening, and depending on your age, could be age related in nature.
Do you have chronic back pain? Neck pain? As we age, our discs loose some of their moisture, and can shrink a bit, causing nerve compression that can be intermittent or chronic. It can also occur in the neck and thoracic, as well as the more common lower back. Arthritis can cause many of the symptoms, particularly involving the headaches, neck turning, and leg pain.
It might be worthwhile talking to your doctor about the symptoms and ruling in or out any spine issues.