If you're struggling to find the source of your problems: it might be the piriformis

The piriformis is usually regarded as being a muscle in the glutes. This is not true. As you can see here, it actually starts in the pelvic floor. If you just google about it, its not that obvious.

Here are its trigger points. You can focus on these regions to relax. Massage can also be helpful to the glute part of the muscle, as it can be reached.