How to fix React-Native installation failures to run on IOS?

Question

Hello,

Following the React-Native documentation it would seem simple if it were only to do what is indicated, only that it is not quite so, it is a mistake to believe that the whole process will work the way it is guided by the site, even because some people already have some of the toolsinstalled, in addition to the fact that versions of some libraries are different, so everything is relatively different for each user.

During the course of the installation, I discovered that there are several steps and processes that have not been very well clarified, such as the installation of pods, with the cocoapods, apart from the various inconsistencies, besides having to install a number of dependencies, it was very confusing to understand who I should prioritize, whether it is the documentation of the site with use of npm or the communication of the processes themselves, which ask to use Yarn, in addition to the various internal conflicts, due to a number of elements preinstalled that receive messages of type Warning, of depreciated contents, outside the problems of port use, I had to research a lot to be able to run something in this sense, and it did not seem to be such an easy task.

To fix some of the problems, which in the documentation does not provide, only managed through stackoverflow, however, I also ended up following flawed recipes, as they are n variables, and risks to be considered, in the end I understood how to do everything in a functional way, it made use of the experience I had and my frustrations of what I could not, the problem is that after you learn to do, It’s late, you’ve filled your machine with things you don’t need, and configurations that have affected other layers of development, the whole thing has gone sideways, and now, I have environment variables that have become eternalized with failures, and I have no idea how to fix this.

There are many answers, but none worked so far, I’m with a test project calling Helloword which was the initial skeleton for me to learn how to install React-Native, I deleted this project from the computer, And now, every time I do the step-by-step right of a new application, no matter how, this fucker comes up behind, looks like a prank, he comes up and says, "Hi, I still exist to ruin your future projects... kk," so I leave it open for an expert, since there are many I believe, come here and tell me what I have to do to fix this:

Here are examples of the same problem.