What is the reason for Muslims turning into atheists who doubt the existence of God, and what is the way to limit the spread of this phenomenon?

The causes of atheism are numerous, the most important of which are: Satan, whims and desires, ignorance, the Muslims' leniency in residing among polytheists, and the atheists' activity in propagating their falsehood. This phenomenon can be curbed by counteracting each cause with its opposite, turning to Allah with the intention of seeking guidance and deepening faith through many means, acquiring knowledge, befriending believers, opposing their enemies, and inviting others to do the same.