We could get into a whole n'other level here, as far as why people choose to believe in Christ.
As scripturally God chooses whom He will save, and is to those whom God foreknew as His people, they are the ones who hear the gospel and believe in Christ and no one else does.
Such as this
Romans 8
28 And we know that all things work together for good to those who love God, to those who are the called according to His purpose.
29 For whom He foreknew, He also predestined to be conformed to the image of His Son, that He might be the firstborn among many brethren.
30 Moreover whom He predestined, these He also called; whom He called, these He also justified; and whom He justified, these He also glorified.
Those who God calls are those who end up loving God and they are glorified at the end of the age.
God being all wise, all knowing, all powerful of course, declares the end from the beginning, as He is God.
We just walk this out in time, but God already determined this from the beginning, before time began, just like this here
Isaiah 46
9 Remember the former things of old,
For I am God, and there is no other;
I am God, and there is none like Me,
10 Declaring the end from the beginning,
And from ancient times things that are not yet done,
Saying, ‘My counsel shall stand,
And I will do all My pleasure,’
2 Thessalonians 2:13-15
New King James Version
13 But we are bound to give thanks to God always for you, brethren beloved by the Lord, because God from the beginning chose you for salvation through sanctification by the Spirit and belief in the truth, 14 to which He called you by our gospel, for the obtaining of the glory of our Lord Jesus Christ. 15 Therefore, brethren, stand fast and hold the traditions which you were taught, whether by word or our epistle.
This is in contrast to the lost whom God did not call, they remain of the flesh and the devil and follow Satan, like Ephesians 2 says.
These are not born of the Spirit. They are sealed into their delusions. The wicked will never understand. It is why you must be born again to see the kingdom of God. And being born again is what the Father God does, that is not under your authority or will.
2 Thessalonians 2
9 The coming of the lawless one is according to the working of Satan, with all power, signs, and lying wonders, 10 and with all unrighteous deception among those who perish, because they did not receive the love of the truth, that they might be saved. 11 And for this reason God will send them strong delusion, that they should believe the lie, 12 that they all may be condemned who did not believe the truth but had pleasure in unrighteousness.
Before time began God called those He foreknew as in knowing them personally,
Paul is a perfect example of this being called by grace, God preserved Paul through his childbirth alive and brought him to salvation. He was a wicked unbelieving jew who persecuted Christians, put them in prison and to death.
But God had purpose for Paul, and what God does cannot be thwarted. All those God saves, he has a purpose and plan for that cannot be prevented.
Galatians 1
11 But I make known to you, brethren, that the gospel which was preached by me is not according to man. 12 For I neither received it from man, nor was I taught it, but it came through the revelation of Jesus Christ.
13 For you have heard of my former conduct in Judaism, how I persecuted the church of God beyond measure and tried to destroy it. 14 And I advanced in Judaism beyond many of my contemporaries in my own nation, being more exceedingly zealous for the traditions of my fathers.
15 But when it pleased God, who separated me from my mother’s womb and called me through His grace, 16 to reveal His Son in me, that I might preach Him among the Gentiles, I did not immediately confer with flesh and blood, 17 nor did I go up to Jerusalem to those who were apostles before me; but I went to Arabia, and returned again to Damascus.
The purpose of God explained
Ephesians 1
Paul, an apostle of Jesus Christ by the will of God,
To the saints who are in Ephesus, and faithful in Christ Jesus:
2 Grace to you and peace from God our Father and the Lord Jesus Christ.
Redemption in Christ
3 Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ, 4 just as He chose us in Him before the foundation of the world, that we should be holy and without blame before Him in love, 5 having predestined us to adoption as sons by Jesus Christ to Himself, according to the good pleasure of His will, 6 to the praise of the glory of His grace, by which He [a]made us accepted in the Beloved.
7 In Him we have redemption through His blood, the forgiveness of sins, according to the riches of His grace 8 which He made to abound toward us in all wisdom and prudence, 9 having made known to us the mystery of His will, according to His good pleasure which He purposed in Himself, 10 that in the dispensation of the fullness of the times He might gather together in one all things in Christ, both which are in heaven and which are on earth—in Him.
11 In Him also we have obtained an inheritance, being predestined according to the purpose of Him who works all things according to the counsel of His will, 12 that we who first trusted in Christ should be to the praise of His glory.