I have pain on left lower back and left leg. I have numbness (2/10) on left leg for past 1 yeae. Sciatica? Or Sinal or any other tumor cancer? Worried

Maybe sciatica? You need to be seen by a doc in the flesh who will get a thorough history from U and do a complete physical exam. Based on those he/she may get an MRI. Then you will discuss therapy.