MRI report has to co-related to the symptoms that you have.
Not always what MRI reveals is actually the cause of your symptoms.
You need to get clinically assessed.
Next Steps
You should get a consult with a Physiotherapist.
Health Tips
The probable core areas of treatment based on your symptoms would be:
1. Manual therapy- MFR for erector spinae and piriformis muscles, thoraco-lumbar spine mobilization to relieve the back pain.
2. Neurodynamics to relieve of the leg pain.
3. Stretching of hamstrings, adductors, hip flexors.
4. Strengthening of abdominal and gluteal muscles.