Back pain can be very challenging. When one begins having symptoms such as numbness, it is indicative that there is some nerve involvement, usually compression of the nerve near the spine.
Surgery can be helpful sometimes but should really be considered as a last resort because back surgery is fraught with complications.
Sometimes physical therapy can be helpful.
I would advise you to get a second evaluation from another back surgeon. Most spine surgeons are reluctant to operate unless there really is no other option due to the potential risks. Sometimes there really are no other treatment options and surgery is the best choice. In these cases, the benefits outweigh the risks and make the surgery worthwhile.
Advice and opinions given are based on the information provided and must not be considered an official medical recommendation. The limitations of the internet prevent an appropriate evaluation. Always consult your doctor if there is concern.