What is this discomfort in my legs? I can´t find a comfortable place.

Leg discomfort. Your question is too general to answer. Leg discomfort or pain can be a sign of serious and or correctable disease states such as arterial disease or neurologic disease. It can more simply be due to one of several forms of arthritis. You should seek an appointment with your primary care physician to review your symptoms and guide your care.
Restless legs? . There is a condition known as restless leg syndrome see your doctor to see if you have it there is a treatment !