Kosmos does not mean sheep
The evidence contradicted you
b. of all mankind, but especially of believers, as the object of God’s love J 3:16, 17c; 6:33, 51; 12:47.
William Arndt et al., A Greek-English Lexicon of the New Testament and Other Early Christian Literature : A Translation and Adaption of the Fourth Revised and Augmented Edition of Walter Bauer’s Griechisch-Deutsches Worterbuch Zu Den Schrift En Des Neuen Testaments Und Der Ubrigen Urchristlichen Literatur (Chicago: University of Chicago Press, 1979), 446.
J 3:16, 17c; 6:33, 51; 12:47
John 3:16 —KJV
“For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.”
not sheep only
John 3:17 —KJV
“For God sent not his Son into the world to condemn the world; but that the world through him might be saved.”
not sheep only
John 6:51 —KJV
“I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world.”
not sheep only
John 12:47 —KJV
“And if any man hear my words, and believe not, I judge him not: for I came not to judge the world, but to save the world.”
not sheep only
It is impossible sheep only are meant here
context as well
you just ignored it