You rather doubt the word of God then because that’s precisely what it teaches. You are essentially suggesting that you, a fallen sinful creature, are more moral than your Creator, that your conception of what is right and fair exceeds His.
God doesn’t expect people to respond to something they’ve never heard. But He does hold us accountable for what we HAVE heard. This idea is expressed by the following passage: “sin is not taken into account when there is no law” (Romans 5:13). If a person cannot respond to the good news of Jesus dying on their behalf (because they haven’t heard that good news), what are they accountable to respond to?
The Bible tells us that there are some basics. First, all people are accountable to know that God exists. “For since the creation of the world God’s invisible qualities — his eternal power and divine nature — have been clearly seen, being understood from what has been made, so that men are without excuse” (Romans 1:20). The complexity of the world around us tells us that there is a God (even though people can suppress that knowledge in their heart). Even those who haven’t heard of Yashua are accountable for knowing that God is.
You have to read the whole book of Romans to understand what Paul was trying to convey through the inspiration of the Holy Spirit.
Basically what you're saying is that you could run down the street yelling "G-D" and "Yashua" (Jesus) and everybody who hears you say that has no right then before G-D to say that they've not heard of Him. Then too, by your logic you are condemning those born before Yashua came and never heard of Him.