What about the Big Bang "Theory" and the Cosmic Microwave Background (CMB) ?
The Cosmic Microwave Background, CMB radiation theory that "testifies" to this Big Bang theory is being constantly questioned by new findings.
Dr. Mae-Wan Ho, a prominent scientists said: “Though it purports to explain observed phenomena, the big bang requires one to rationalize an immense field of accumulating anomalies, forcing cosmologists to devote most of their time to inventing ways around the contradictions by introducing purely theoretical constructs like dark matter, dark energy, black holes and much more.” (Ho, 2015).
Thus, the Cosmic Microwave Background, CMB radiation theory that "testifies" to the 13.5 billion years of our universe is being constantly challenged by many credible scientists (apparent anomalies, if found to be of cosmological origin, will pose a big challenge to the standard model of cosmology).
"More work has to be done to find a proper approach to modify the effects of imbalanced differential observations and recover a corrected temperature map.
Further study of the errors in WMAP temperature and noise fluctuation maps caused by the observation inhomogeneity and imbalance is obviously required".
https://academic.oup.com/mnras/article/398/1/47/1092479/Observation-number-correlation-in-WMAP-data
Another paper on "STATISTICAL CHALLENGES IN THE ANALYSIS OF COSMIC MICROWAVE BACKGROUND RADIATION" said,
"According to the standard cosmological model, the Universe that we currently observe originated approximately 13.7 billion years ago in a very hot and dense state, in what of course is universally known as the Big Bang. Neglecting fundamental physics in the first fractions of seconds, we can naively imagine a fluid state where matter was completely ionized..".For a more detailed discussion on the CMB please go to this link: https://creationhomeschooler.blogspot.com/p/what-about-cmb-has-it-proven-big-bang.html
"These datasets are a goldmine of information for Cosmology and Theoretical Physics; their efficient exploitation posits several intriguing challenges from the statistical point of view. ..In this paper we review a number of open problems in CMB data analysis and we present applications to observations from the WMAP mission"
https://ia800900.us.archive.org/7/items/arxiv-0807.1816/0807.1816.pdf
When everything else fails, just throw in the "Millions" if not a few Billions of Years
Thus, evolution theories leave that part up to you to figure out with your imagination via the millions of years of time line.
Evolution theories always add the "magic mix" of millions of years idea to the explanation of un-intelligent creation. The most reliable textbook ever written doesn't waiver, it unequivocally states: In the Sixth Day, [Someone]-God created humans.
(Then God said, “And now we will make human beings ; they will be like us and resemble us. They will have power over the fish, the birds, and all animals, obdomestic and wild,[d] large and small.” 27 So God created human beings, making them to be like himself. He created them male and female, .. Evening passed and morning came—that was the sixth day".) Gen 1:26
No ! this Creator did NOT create a single cell to find its way through "millions of years of mutations".
Would you start to design and implement any thing, a computer, a TV, a car, a bridge, a sumptuous meal for your neighbor to finish it , or start anything, and then leave it for "luck" to get it done?
That's NOT what the Bible says. God is not lazy. God, the Creator, like you and us intelligent persons likes to get things done, and finish what He starts !. So will My word be which goes forth from My mouth; It will not return to Me empty, Without accomplishing what I desire, And without succeeding in the matter for which I sent it. Isa 55:11
The motivation to leave God out of the picture.
If everything came about by natural processes—without a Creator, or a God in the picture—then, we don't owe anything to this Creator. He does not own us and has no right to tell us how to live.
In fact, it has been said: “God does not really exist in this way of thinking, so there is no absolute basis for morality.” https://answersingenesis.org/dinosaurs/when-did-dinosaurs-live/what-really-happened-to-the-dinosaurs/
Single cell "evolution" could have never assured success in the matter of life as it exists today.
http://gootoyou.com/
Ho, M.-W., Dr. (2015). Electric Plasma Universe Arrives. Science
in Society Archive. Retrieved from
http://www.i-sis.org.uk/Electric_Plasma_Universe_Arrives.php
http://www.i-sis.org.uk/Mae-WanHo.php