rear bumper clips

[fhorta]

Hi all. I drove into big hole and as I drove out of it the rear bumper dragged into the ground and bumper was pulled a bit and is now loose. After looking at it, driver's side rear bumper is missing the clips thay bumper attaches into..I guess they broke..where can I find those clips and will.I have to remove the whole bumper to replace.clips so I can.push bumper into clips and snap it back into place?