As I have already shown, we have the evidence that evolution was responsible for the differences between the chimp and human genomes. It isn't an assumption. The fingerprint of random mutations is all over those genomes. Every time you say it is an assumption it is a ***. We have the evidence.
God doesn't make changes, He designed a genome for each creature and let it do its thing.
If the designed genomes have different sequences then those differences are changes. You are claiming that the sequence of a genome can't be any other sequence. If the sequence is different then it can only be deleterious or neutral, but never beneficial, according to your argument. Therefore, God could only design one genome and no others.
Yes, they are rare. Winning lottery numbers are also rare, yet people win the lottery all of the time using random numbers.
What you are trying to claim is that beneficial mutations are non-existent. If beneficial mutations are rare then random mutations will have no problem finding them. As I have already shown, the current human population has produced every non-lethal mutation at every position in the human genome 40 times over. I don't think you have an appreciation for the numbers involved.
Each genome is unique. It has nothing to do with mutations at all.
Every human is born with about 100 mutations which adds to the uniqueness of their genome. Every subsequent generation keeps adding mutations and keeps adding to the uniqueness of genomes. It has everything to do with mutations.
Do you deny the OBSERVATION that people are born with mutations?