It's not for us to judge them. For reasons only known to God, not everyone is yet permitted to believe in and follow him. No amount of evangelizing will bring them to God. We can plant seeds but it's up to God to let them believe. So, stop banging your head against the wall. Share the word and accept that some are not yet ready to believe it. Don't be arrogant about it. Instead, be happy knowing that you have been blessed.
John 6:65 And he said, “This is why I told you that no one can come to me unless it is granted him by the Father"
John 6:44-45
44 No one can come to me unless the Father who sent me draws him. And I will raise him up on the last day. 45 It is written in the Prophets, ‘And they will all be taught by God.’ Everyone who has heard and learned from the Father comes to me.
Romans 11:25
Lest you be wise in your own sight, I do not want you to be unaware of this mystery, brothers: a partial hardening has come upon Israel, until the fullness of the Gentiles has come in.