If you are asserting that God does not exist and human development is the product of evolution yet it cannot explain the concept of death and cell biology cannot provide any evidence of soul then surely evolution cannot be true? There is obvious and important missing link in the theory of evolution.
Whereas, if I look around and observe what is around me, the perfect order of the universe, the placement of earth in the perfect orbital stationery so that life can exist. The creation of human the function of human body and the organs are ultimate evidence of the existence of a creator, God far above any knowledge can comprehend. Yet God have given us humans enough intellect and guidance to know that God exist.
It is completely irrational not to ponder and debat as how the universe came into being and everything in it.
If you look around you and see the evidence, you will find everything in perfect order. There, in order for that to happen surely and reason person would know you need something to create rules for the order to establish.
You cannot have any laws that we are bound by from disorder and chaos.
Everywhere science looks and discovers it finds perfect order.
That is the creation of God and not random evolution
Therefore, there's more conclusive evidence of God's existence than not.
This is not the place to have in-depth theological debates but I can give you evidence of knowledge that science did not have until recently in terms of time but God revealed with perfection long before science.
At the end of the day. The truth is, there will always be those who will never believe in God no matter what evidence and signs you bring them and there are others who use their intellectual faculties and accept the signs and evidences after pondering upon them and believe God because those evidences could not have come from anyone other than God/Creator who is independent of His creation.
God cannot be born nor die. God is everliving and self sustaining. God sustains everything and does not need anyone to sustaine Him.
Anyone claiming to be God other than these attributes cannot be God.