Are you feeling your lower back rather than your glutes when hip thrusting?
The Hip Thrust or Glute Bridge is an incredibly effective exercise for targeting the glutes, but one that's often difficult to set up and performed incorrectly.
Continue to perform incorrectly and you could be contributing to lower back pain.
At the bottom of the rep, try and tilt your pelvis towards you. This engages the core, activates the glutes and helps you to drive through the hips instead of the lumbar spine. - 49 minutes ago