When people have back pain it can be hard to exercise.
This is why finding the right exercises is paramount to the rehab process.
One way that has worked clinically is strengthening the glutes.
The hips are a window to the lumbar spine.
And there are many ways to strengthen them without aggravating the back.
A recent systematic review also concluded that strengthening the hips reduced low back pain and disability.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10536491/