In many ways, the doctrine of reincarnation is not true. It is not out of God's Word. The Bible does not say anything about being reincarnated. We as humans will not be reincarnated. If there were to be reincarnation, the Word of God would have told us.
We must be careful of the theories of men. Men bring out theories out of their own imagination and perception and teach it to people. They have driven these theories generations after generations and made some people accept them as the truth.
But these are not the truth. They are not true. If they were true we would have seen the evidence. How can you believe that we will become better after reincarnation? How can a human die and become reincarnated as a rat? Such beliefs are not true.
The Bible says that the world will get worse by the day. We are seeing that coming to pass. If we could become better after reincarnation, then the world would have been a better place. But that is not what we have presently. Evil is growing everyday. So, reincarnation is not the truth.
Reincarnation is Spiritist doctrine and not Christian