here is an evolution and there is a goal, as you said, to communicate

I would argue that this is just humans attributing intent to a natural process that has none, and is the same sort of erroneous conception as when people say that history has some grand end goal it’s working towards. I believe this is amply demonstrated in the lack of success found by Esperanto and similar conlangs that were deliberately constructed in order to be easy to learn for a wide range of people as a neutral lingua franca. If what you claim about the purpose and goal of language were true, these conlangs should have seen widespread adoption and be the most widely spoken languages today, rather than their current status as quirky ideas that are mostly of no interest to people who aren’t complete nerds for studying languages.