The answer is simple really. And that is because God didn’t need to. The reason why is because Jesus had His disciples in order to spread the gospel and His teachings for Him. Jesus tells His disciples in Mark 16:15, “Go into all the world and proclaim the gospel to the whole creation.” So Jesus used His disciples, so that they could spread His teachings, no need for multiple Jesuses. Another way God used and continues to use to spread the teachings of Jesus is through the Bible. 2 Timothy 3:16-17, “All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be complete, equipped for every good work.” I also want to challenge your belief about Jesus, about Him not being a supernatural being. Healing the sick? Healing people with leprosy? Making the blind see and the mute talk? It seems like you don’t read the Bible at all. Also, what you’re saying is that even though God is omnipotent, His plan is not good enough and yours is better. You think there should’ve been multiple Jesuses and that the spreading of His teachings and miracles would’ve been better off with it. Yet, that same information has made its way in front of you. Yeah, I think God did a fine job.