Faith, Salvation, Evidence, Ignorance, Without Excuse

It is not you. It is Satan, who will attempt to make those doubt the authenticity of our faith. Romans 1:20 says, "The invisible things of him from the creation of the world are clearly seen." God's evidences are so clear that verse 20 ends by saying all (everyone who don't believe) are "without excuse."

All of us are born spiritual ignorant, not stupid. Through Adam, we are born spiritually dead. The nineteenth-century Scottish commentator John Eadie described it as a case of "death walking". Spiritually dead people are like zombies--they don't know they're dead and they're still going through the motions of living.

John 6:63
It is the Spirit who gives life; the flesh profits nothing. The words that I speak to you are spirit, and they are life.

Romans 8:2
For the law of the Spirit of life in Christ Jesus has made me free from the law of sin and death.

"Now faith is the substance of things hoped for, the evidence of things not seen." (Hebrews 11:1-2). The great enemy of faith is a complacent spirit, an attitude of self-satisfaction with the status quo. Faith is believing there is another dimension to life other than those which can be touched, tasted, seen or felt. There is more to life than that. There is also the realm of the spirit, the invisible spiritual kingdom of God.

As I read OP's thoughts, God is a sovereign God and we have to understand that somehow, mysteriously, within the framework of predestination and within the framework of His sovereignty and the framework of election, which I believe in, there is a place for human freewill which is whether they respond to the conviction of the Holy Spirit. One of the perfect examples of the "conviction" is Jesus' knocking in Revelatoin Revelation 3:20, Jesus said:
Behold, I stand at the door and knock. If anyone hears My voice and opens the door, I will come in to him and dine with him, and he with Me.

Recognizing the Jesus voice is like a sheep recognizing the shepherd's voice. Only the Holy Spirit can prick a person's heart to cause a person to hear Christ's voice. Jesus said in John 10:14-15 I am the good shepherd; and I know My sheep, and am known by My own. As the Father knows Me, even so I know the Father; and I lay down My life for the sheep.

Acts 10:44
[ The Holy Spirit Falls on the Gentiles ] While Peter was still speaking these words, the Holy Spirit fell upon all those who heard the word.

Acts 15:7-9
Peter rose up and said to them: “Men and brethren, you know that a good while ago God chose among us, that by my mouth the Gentiles should hear the word of the gospel and believe. So God, who knows the heart, acknowledged them by giving them the Holy Spirit, just as He did to us, and made no distinction between us and them, purifying their hearts by faith."

Galatians 3:2
This only I want to learn from you: Did you receive the Spirit by the works of the law, or by the hearing of faith?

1 Thessalonians 1:5
For our gospel did not come to you in word only, but also in power, and in the Holy Spirit and in much assurance (conviction), as you know what kind of men we were among you for your sake.

God unconditionally elected some (the elect) for salvation and whoever responded to the conviction of the Holy Spirit will receive "faith".

Other than that, I can't say much.