Hello and welcome @JBucky
If the exact footprint is not in a Kicad library, you may:
A. find a suitable alternative that does exist in the Kicad libraries.
B. Modify a Kicad footprint to suit your purpose.
C. Import a suitable footprint from a third party.
D. Build your own footprint.
In the case of B, C & D, you will first have to create your own personal, empty, library/s in which to place the footprint as Kicad libraries are Read Only.
If you have yet to create personal libraries, here are some links to follow:
https://forum.kicad.info/t/kicad-7-beginners-guide-to-personal-symbol-and-footprint-libraries/38738
https://docs.kicad.org/7.0/en/getting_started_in_kicad/getting_started_in_kicad.html
https://docs.kicad.org/7.0/en/pcbnew/pcbnew.html
If you have any problems, please feel free to post. 