Evolution is based on mutation.
If you start with a simple micro organism, no matter how it came to be on earth, you only have that single organizational, informational unit. If you copy it sequentially time and time again, it must accumulate enough copying errors (mutations) to lead to the diversity of living forms on earth.
And here is it's downfall:
Any organized living system that developed or emerged from pond scum 4 billion years ago, if allowed to copy itself over and over would destroy itself, because for every favorable mutation there would be hundreds of unfavorable mutations.
Considering that there are millions of different species of insects, mammals, fish, reptiles, birds etc, if evolution is correct, every one of these millions of individual species would have needed, by random mutation, to beat the odds against the accidental badly mutated evolution of it's own species.
And for every one of the millions of species that did seem to have beaten the odds, the millions and millions of transitional forms of mutants that didn't beat the odds have never been found.
Where did you get the "millions and millions of transitional forms of mutants", from?
Honestly, your post was boilerplate Christian creationist "...what are the odds?". Another variation being, "...it's just too complicated to have happened by random chance".
Fitness for survival is a reality of evolution you should acquaint yourself with.
On the other hand, if you can't account for the fosill record, could it be that the gods have played a cruel joke on you?