Larger changes aren't shown to happen repeatabley. The fossils are the facts, not the theory.
And the theory predicts the facts, which confirm it.
As for 1+1 = 2, that is a lie if you think micro=macro, because natural selection, as you said - moves against mutation, and culls defective genes according to environment.
If you have a gene pool and you get an isolated population, the removal of information is negative. So you're going from 5, to 4, to 3, to 2.
So 5-1-1-1 doesn't = 8.
Mutations increase diversity, selection reduces it. By ignoring the first of these two very obvious facts, you have managed to get the wrong answer.
Untill you can SHOW ME those changes in real time, logically and technically, evolution is not proven.
Bald assertion is no substitute for being right.