Buttock pain since 1. 5 years. Region.

I used to do running and suddenly one day 1 day I started getting pain in my left buttock(only while walking/running). Later on the pain started to come down the leg accompanied by tingling, numbness. After a couple of months it started occurring in my right side as well. I tried physiotherapy treatment in 2025 at 4-5 places and also ruled out any spine related issue via MRI. Even got steroid shots in the glute area. Physios are suspecting piriformis related issue and currently my right side is much more painful while sitting and sleeping on that side. I am living in pain since so much time and although I am visiting physios it only gives me temporary relief for like an hour. Then the pain takes over again. I cannot live like this anymore and would like to go for surgical treatment. Please suggest me a good place to get surgery related to this based in Mumbai as I stay in Mumbai/Thane region.