you clearly have 0 understanding of genetics, 0 fucking clue
if you had good genetics, you would try swimming and naturally do well, and would have pursued it. you did not have good genetics, you did not do well, so you did not pursue it. not swimming as a kid was not the fucking difference between you being a 6ft2 good looking chad and a 5ft1 recessed subhuman.
people who have genetics that make them naturally excel at something will have infinitely more success than somebody who has shit genetics and just tries to bruteforce their way into something.
muscle building a key example. 2 people can do the exact same weight liftings, same diets, and one can gain 2x the muscle as the other guy. the guy who has the genetics to build more muscle will more than likely pursue weight lifting due to his genetically-disposed success and the guy who does not have the genetics for it will likely not pursue it.