What kind of FEC is suitable for me?
There are many out there.
If you are a newbie, I suggest you to read Texas Instruments DN504 for a clear explanation and for a software implementation.
This  document gives an overview of the FEC implementation in the CC11XX, and CC25XX RF transceivers families.
https://www.ti.com/lit/an/swra113a/swra113a.pdf?ts=1619516881539&amp;ref_url=https%253A%252F%252Fwww.google.com%252F