Here’s a quick story. At my local optical shop the 20-year-old, six-foot-tall son of the owner was in terrible back pain. I put him on the floor, did some FST type stretching and he stood up basically pain free. What does that mean to you on and off the pickleball court? It means there is hope for your sciatic bun pain. Do you stretch? Hmmm. Why not try it? Do the exercises below two or three times a day for five minutes on each bun and see if it helps.
Cross left foot over right knee (called a figure 4). Lean forward (smile) till you feel the stretch.
Move your body toward your foot for a bigger stretch.
If your knees will allow you to sit in Z sit (one leg bent front, one leg bent back). Do the same movements as above.
Change legs to other side and repeat exercises.