Sure you can prove micro evolution

Now prove macro evolution, evolution from one species to another.  Are frogs the only thing you can use to say aquatic things moved on land?

We see chimpanzees and apes today, but no neanderthals or homo erectus living today.  Did they really all die out due to natural selection?  They would seem hardy enough to survive in small communities.  Why don't chimps and apes display more mutations that would indicate progressing towards humans, such as upright or hairless chimps, or variations of chimps that resemble one of several stages in evolution, rather than still being the same species we branched from 5 million years ago?