Why doesn't the install command want to create files to work with it?

Question

PHP

I installed composer on Windows, I go to the folder with the project on xamp and I propagate
composer install to its folder in the console

According to the description, I should have created all the folders to work with it by default and then add the necessary libraries to json manually or also through the command line just already install with the name of the libraries.

But he always swears that there is no composer.json, that there is no composer.phar.
Even having created them manually, he further swears that there is nothing there, but if you can still get into json, then phar does not open.

How can I get started with it?

Answer 1

Do a composer update.
I don't know why, but sometimes install doesn't install new ones, but update installs