Is the repentance of a young man who molested two children accepted, and can his actions affect their future inclinations?

As long as you have repented to Allah from these ugly deeds, then rejoice in the acceptance of your repentance and Allah's forgiveness for you. Do not pay attention to the whispers of Satan, for Allah accepts repentance, and repentance wipes away what came before it, and the one who repents from a sin is like one who has no sin. So do not fear punishment for these sins, for the repentant one is not punished for their sin in this world or in the Hereafter. Turn away from these obsessions and strive in obedience to Allah.