I have lower back pain and right lower leg pain

What is the treatment of lower back pain and right lower leg pain?
Painkillers and anti-inflammatory drugs such as 1x2 CELECOXIB200mg or 1x2 NAPROXiN500mg
Muscle relaxants. If mild to moderate back pain does not improve with pain relievers such as ORPHANDRINE CITRATE 1X3
Topical pain relievers. These are creams or ointments placed on the site of pain such as PIROX GEL
physiotherapy
Massage with sesame oil
What are the causes of lower back pain and right lower leg pain?
Muscle strain
Wrong movement
injury
Torn cartilage
Using your back in weightlifting
What are the necessary tests in your case?
X-ray
MRI or CT scan
PHYSICAL RXAMINATION