We see in the Holy Bible that Jesus said, God so loved the world, now that speaks for itself.
But Jesus said “should” not perish.
He said “should” not perish, because we (the world) as sinners, have a responsibility and that is in the next verse below, where Jesus said
“Repent.”
No longer doing what is right in our own eyes.
Ephesians 4:22 KJV
That ye put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts;
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.
Matthew 4:17 KJV
From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand.