There are plenty of revelations in the Quran that give witness to what Mohammed truly was by the very people who lived with him and around him at the time.
The prophet of Islam declared himself the first terrorists and would pray to the “Lord of the Devils”, Allah, before each raid. He declared that all Muslims would go to hell on death and they could not avert going to hell as even he himself would go to hell. He admitted and declared that he was possessed by a devil many times.
Don’t shoot the messenger! It’s all in the Quran itself.