By all means learn about raw DOM manipulation with JavaScript first, but do not go directly for react.
We are repeating the same issues we had years ago where people started conflating JavaScript with jQuery - people are conflating JavaScript with react l.
JavaScript is an insanely powerful flexible and widely deployed language. It is so much more than just react/jQuery. It is the Lingua Franca of modern computers.
Yep, where is the documentation for modern JS without any libraries?
Preferably something that doesn't try to teach you what an if and a loop are first.
Now where's the equivalent for actually using JS in a modern web browser :)
Why did you immediately jump to comparing JavaScript approaches?
It is perfectly legitimate and practical to build a web application using little to no JavaScript. It is also abundantly evident that consumers and professionals are still happy to pay to use web applications which employ little to no JavaScript.