Well if you "know that", then why are you arguing that because science cannot literally prove human evolution, we should therefore consider that maybe "God did it!" ?? (see the highlight of your own words below) -
If you understand that neither science nor anything else can truly claim literal “proof” of anything (where “proof” means 100% unarguable certainty that can never be wrong), why are you then writing as if that means we should seriously consider that an un-evidenced intelligent God is guiding evolution? ... we also cannot "prove" that 50ft pigeons from Jupiter are not the cause of evolution (or the cause of all "Creation"), does that mean we also have to serioulsy consider that (and a million other such silly beliefs) as a realistic possibility (at least pigeons do exist ... whereas gods have no known existence).
And by the way - in your highlighted post above where you just said "science says nothing on the matter"; On the contrary science says something extremely clear on the matter - science says that the answer is natural evolution and NOT an un-evidenced invisible God from heaven.