Christians believe that we were born sinful and therefore we have to be baptized. What does Islām say about original sin?

In Islām, every person is born free of sin. It would be inhumane and unjust that God would create us with sins. God is so merciful. He created us as pure as crystal ice. It is only after the age of puberty that one will be accounted for his deeds and actions preceded by intention. At that time, we will be rewarded ten times for any good deeds and we will be charged once for every bad deed. If we ask forgiveness from God, He will forgive us. Because we are born free of sins, we do not need to be baptized. We are already born as Muslims.