Good question but to answer with detail.
When I played basketball (about half a century ago) we use to do this:
When someone made a 3 point shot, we would throw the ball back and say, "Luck"
If he made it again, we would throw it back and say, "Even a broken clock gets it right two time".
If he made three in a row we said, "you got it!"
Luck has nothing to do with it and anyone can get answered prayer and improve if they do it within the spiritual principles (in the Christian worldview)
I received Jesus at 28, so to say that "I was lucky" is to forget my past. I remember staring in a Tom Collins drink at a local bar appropriately called, Mac's Zoo Room and sayin in my mind, "where are all the miracles I have heard about from the Bible"? You only see the miracle of pink elephants in alcohol.
After I gave my life to Jesus, it all changed. Not that every prayer was answered in as much as I was growing in knowledge and understanding. But that knowledge and understanding is for all.
As a Christian, we believe the following:
"2 Grace and peace be multiplied unto you through the knowledge of God, and of Jesus our Lord, 3 as his divine power hath given unto us all things that pertain unto life and godliness, through the knowledge of him that hath called us to glory and virtue: 4 Whereby are given unto us exceeding great and precious promises: that by these ye might be partakers of the divine nature,"
So, the more knowledge and understanding, the more grace is multiplied
My past includes divorced parents that caused siblings, including me, to go haywire. Within the siblings of 5 we have double digits divorces, a sister with a pregnancy at the age of 14, multiple abortions, suicidal tendencies and alcoholism. The next generation produced the same with drug addictions added to it along with a suicide.
All needed Jesus to move forward.
My wife, who came from an abusive alcoholic home, saw murder, prostitution, witchcraft, and wife beatings among other things.
They also received Jesus and had a life change.
So we were hardly "lucky".
But to the question of "what about the others". That is why we go around the world and preach the gospel because everyone needs (within the Christian worldview) a relationship with God in a face-to-face encounter through Jesus Christ. The answer to all the "unlucky ones" is that they are also included in the love of God who will make the difference in their lives should they so choose.
(I'm sure that other religions have their own dictates on the "how"? We simply say it is a gift through Jesus Christ)