Rexka 20pcs Interior Door Trim Panel Clips for Subaru 909130105 BRZ, Forester, Impreza, Legacy, Outback, B9 Tribeca, WRX & XV Crosstrek - Door, Headliner, Interior Trim, Liftgate & Quarter Panel

Assuming thwacking it harder to reseat the clips is failing, the clips are probably broken. No stock style insulator: https://www.amazon.com/Rexka-Interior-909130105-Forester-Crosstrek/dp/B0DYY9RSSZ Stock style insulator: https://www.amazon.com/Rexka-Fastener-909130228-Crosstrek-Forester/dp/B082RV46XV In my '24 Crosstrek there's 2 hidden screws, 1 obvious one in the pull handle area and 1 hidden real good behind a panel in the door-open handle. Then you pry/pop the panel off from the bottom and slide upward to remove. I've taken door panels off a bunch of vehicles, really the only thing that changes is where the 1-3 hidden screws are. If you want to get real adventurous you can get sound deadening panels to put on while the doors are apart. I don't know if the foam stuff needs a helper install tool like Kilmat does but if you get any of the "aluminum backed buytal" stuff you need a couple widths of the metal roller tools to get it to stick properly.