This Clip-on mount is for DiA Universal antenna mount standard on top plate.
There is two ready to print files, with 3mm and 2mm holes angled in 45 degree. They both are with integrated supports for clips. They are red colored in the first picture. Just cut them off after printing.
Get info and open source file from DiA UAM and create your own mount.
Use 95-98A TPU.
Print the back of the mount down. See the slicer screenshot.