Why didn't you learn? I think (and the researchers checked) - most people are able to communicate with a dog on a very serious level. A significant number of people communicate with cats in some way. Over the past 60 years, dozens of experiments have been carried out on completely conscious communication with great apes. A fairly large part of the signals of dolphins and other cetaceans has long been clarified - and attempts to communicate directly with them cannot be called completely unsuccessful. Researchers and trainers quite consciously know how to send a message with body language for hundreds of species of animals. But whether there are aliens and how successful our attempts to communicate with them have not yet been clarified. And to hope that a person will learn to communicate with the plague bacillus or ciliate shoe is a utopia
This is definitely a good question.
We have not yet learned how to communicate with each other, we cannot understand, we are all different. We don't even strive.
Perhaps someone wants to find, somewhere far away, those who would be like us and find a common language with them. The topic is quite extensive. There are many cornerstones, many truths and values. If you take into account all the factors, it will be physically impossible to answer here with a text that you may understand in your own way, moving further and further from the author's thoughts.