For humans to have evolved from lower primates, themselves from lower animals, going back to the first bacteria, too many complex molecules, their combinations, and chemical processes would have had to form to result, the Earth being not old enough for there to be enough time for this to happen, even if we go with an Earth that is 4.5 billion years old. Too much has to happen by natural means to result in the first cell in that amount of time. It is too complex and ordered compared to anything in nature that is not living.
For a cell to be an actual cell, it has to be able to divide and form other cells, it needs energy to do that, as well as an actual structure. There would need to be a permeable membrane, with channels to bring in chemicals, organized chemical pathways, organelles, highly specific chemicals with highly specific functions, either DNA or RNA, and molecules that specifically use genes to construct other molecules., even for the most basic first cell.
More specifically, you need phospholipids to form perfect spheres, highly designed proteins to form membrane channels, highly specific chains of enzymes and other chemicals to form highly designed, purposeful chemical pathways through the inside cytoplasm fluid, including to make energy in the form of ATP from chemicals like glucose, a lattice work of proteins to form the structure of a new cell dividing from the original, highly specific enzymes to bind to genes to translate the code in constructing new proteins, etc, etc.
For one such cell to form out of chemicals on Earth means there needs to be pre-existing proteins, glucose, DNA, and RNA formed in nature on Earth, all in the same place and time to form just the most primitive of first cells. Intuitively, that is a practical impossibility, but even if so, it shows intelligent design. It is a contradiction to see the evolution of the first cells coming out of an environment that does not already have intelligent design.
Just think about it. There are in nature these biochemicals, such as RNA found in viruses, which are non-living, proteins, and even cell like structures of just phospholipids which can spontaneously form spheres. But to have just one first cell that can divide and make more, there would literally have to be hundreds of components that form an organized, unified whole for the cell to form and divide through mitosis or cell division. It can happen on a smaller scale with a sphere, a primitive membrane with simple channel proteins, but at least hundreds of biochemical complements would have to enter the cell and form it in an organized way of organelles and at least RNA which is single-stranded. All by means of random events without intelligent design.
Given enough time I suppose the cell could spontaneously form given the right conditions, but that itself is doubtful. It’s also possible that even in an infinite universe that combination would never happen on its own through a random process.
Also, even if nature could evolve into cells that divide, they would have to survive long enough to become actual organisms, which over time give us things like the human eye or the human brain, again all by means of random events.
Therefore, either God created living things out of nothing, or through evolution driven by intelligent design, but that itself would not really be evolution which is driven by randomness. Even if it could be argued in a few billion years complex biological life could arise from combinations of events, looking at the level of order and organization even in just one bacterium, there is intelligent design.