Stopping that incessant rattle from the rear CX-5 hatch

[ash-m]

I'm so annoyed. The nuts to the spoiler went missing into the tailgate lower trim (I only ever recovered one). I watched videos and looked at diagrams, but I still ended up breaking the trim. I am sure it depends on the vehicle (mines a 2016.5) but the lower trim has some kind of clip mechanism near the top inside corner of the "taillight service hole cover". I don't know what that's supposed to look like because it's broken and all I can find now is a little clip (the mutilated bits of plastic are gone). If anyone knows what that's supposed to look like or knows where I can get a cheap replacement lower trim, please let me know.