@hsavior I am currently using this:
uConsole micro antenna 0.2 mount by m3x | Download free STL model | Printables.com
I also have these on hand for mounting things that require longer screws:
(multiple lengths available - select what you need)
https://www.amazon.com/gp/product/B0CS944XYG/
The 6mm are basically the stock ones, the 8mm work with the antenna, and I use the 10mm for the hinge mounts on this screen cover:
I printed both the antenna mount and the hinged screen cover with SUNLU PLA+ 2.0 Black at a .15mm layer height and variable layer heights turned on for the curved surfaces, and they look great, like stock parts that should have been included.
Also for reference, the pigtails and antenna I went with: