My legs and feet hurt and tingles II can barely walk, what is this called? What can be done about iti? Painful

Spine problem. The involvement of both legs and tingling and weakness sounds like a problem with the spinal nerve roots. I would see your doc or an orthopaedic spine surgeon.
Many things? You may have ddd (degenerative disc disease) or spinal stenois (not enough room in the spine). You could have significant PVD (perhipheral vascular disease-blockage in arteries) or you could have severe neuropathy (nerves affected by diabetes or other causes). You should see your pcp, neurologist, orthopedist, cardiologist/cv surgeon or other practitioner and get examined and diagnosed.