Do the two noble verses (But if you fear that you will not be just, then [marry only] one) and (And you will never be able to be just between wives, even if you should strive to do so) mean negating (perfect) justice for humans, and thereby nullifying a man's right to polygyny, and what is the intended meaning of the noble verse?

Allah has permitted a man to marry more than one woman (up to four) if he is able to provide for them and deal justly with them.

The noble verse: "then marry what pleases you of women, two or three or four" [An-Nisa:3], indicates the possibility of justice.

As for the verse: "And you will never be able to do justice between wives, even if you should strive to do so" [An-Nisa:129], it negates complete inner justice and the inclination of the heart, which a person does not control, and it does not prohibit polygyny.

The obligatory justice is in providing lodging and financial support, and whoever fears not being just in these two matters must restrict himself to one wife.