In order to believe in Islam, you must first believe that Christianity and the biblical texts were wrong and corrupted.
So you should start by investigating and comparing Islam to Christianity.
Here is a simple comparison:
Christianity is the fulfillment of the Jewish covenant. It is supported by over 25,000 manuscripts, 1,500 years of history, 40 authors who never contradicted each other, more than 2,000 fulfilled prophecies, documented miracles, and external non-biblical sources confirming Jesus was a real person.
You would have to reject this vast, cohesive body of work that accurately pred