God uses whatever He chooses to draw a person to Jesus and sometimes it may be fear. So tho whatever the road to get to Jesus--once to Jesus, He is THE final and ONLY way to salvation. So technically, God absolutely uses many things & its often life circumstances that cause a person to realize how frail and uncertain life can be. Its the realization of sin that separates us from God that brings fear of the Lord and godly sorrow, which leads to repentance. If someone has not been born again by the Spirit of God, the only fear they have is fear of things in this world.

The fear of the Lord is different from the fear of man and fear of things in this world. All thru the bible we can see countless times we are told not to fear, why we shouldnt fear, and the answer to fear. Jesus said I will tell you who to fear, not the one who can kill the body and thats it; fear the One who after that, has the power to cast you into hell. The fear of God is developed differently as we grow as a Christian but begins when we realize we need Jesus. And it doesnt feel like 'fear' as we know it for life situations. The fear of the Lord is peaceful and doesnt make sense really until someone is born again.

Bottom line, TLDR; God uses what He has decided to use to draw someone to Him and the circumstances of life will be a catalyst and useful; Acts 17:24-31, specifically 26-27 tells us what brings someone to God and it could be a number of things. "And He has made from one blood every nation of men to dwell on all the face of the earth, and has determined their preappointed times and the boundaries of their dwellings, so that they should seek the Lord, in the hope that they might grope for Him and find Him, though He is not far from each one of us..."